Add SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 functions to interface

7 files changed, 1261 insertions, 1 deletions

diff --git a/include/Makefile.am b/include/Makefile.am
index 7aca2a0..624814e 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -11,4 +11,5 @@ nobase_include_HEADERS = \
 	libimobiledevice-glue/termcolors.h \
 	libimobiledevice-glue/cbuf.h \
 	libimobiledevice-glue/opack.h \
-	libimobiledevice-glue/tlv.h
+	libimobiledevice-glue/tlv.h \
+	libimobiledevice-glue/sha.h
diff --git a/include/libimobiledevice-glue/sha.h b/include/libimobiledevice-glue/sha.h
new file mode 100644
index 0000000..3a00578
--- /dev/null
+++ b/include/libimobiledevice-glue/sha.h
@@ -0,0 +1,86 @@
+#ifndef __SHA_H
+#define __SHA_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <libimobiledevice-glue/glue.h>
+
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ */
+
+/* SHA-1 */
+typedef struct sha1_context_ {
+    uint64_t length;
+    uint32_t state[5];
+    size_t curlen;
+    unsigned char buf[64];
+} sha1_context;
+
+#define SHA1_DIGEST_LENGTH 20
+
+LIMD_GLUE_API int sha1_init(sha1_context * md);
+LIMD_GLUE_API int sha1_final(sha1_context * md, unsigned char *out);
+LIMD_GLUE_API int sha1_update(sha1_context * md, const void *data, size_t inlen);
+LIMD_GLUE_API int sha1(const unsigned char *message, size_t message_len, unsigned char *out);
+
+/* SHA-256 */
+typedef struct sha256_context_ {
+    uint64_t length;
+    uint32_t state[8];
+    size_t curlen;
+    unsigned char buf[64];
+    int num_dwords;
+} sha256_context;
+
+#define SHA256_DIGEST_LENGTH 32
+
+LIMD_GLUE_API int sha256_init(sha256_context * md);
+LIMD_GLUE_API int sha256_final(sha256_context * md, unsigned char *out);
+LIMD_GLUE_API int sha256_update(sha256_context * md, const void *data, size_t inlen);
+LIMD_GLUE_API int sha256(const unsigned char *message, size_t message_len, unsigned char *out);
+
+/* SHA-224 */
+#define sha224_context sha256_context
+
+#define SHA224_DIGEST_LENGTH 28
+
+LIMD_GLUE_API int sha224_init(sha224_context * md);
+LIMD_GLUE_API int sha224_final(sha224_context * md, unsigned char *out);
+LIMD_GLUE_API int sha224_update(sha224_context * md, const void *data, size_t inlen);
+LIMD_GLUE_API int sha224(const unsigned char *message, size_t message_len, unsigned char *out);
+
+/* SHA-512 */
+typedef struct sha512_context_ {
+    uint64_t length, state[8];
+    size_t curlen;
+    unsigned char buf[128];
+    int num_qwords;
+} sha512_context;
+
+#define SHA512_DIGEST_LENGTH 64
+
+LIMD_GLUE_API int sha512_init(sha512_context * md);
+LIMD_GLUE_API int sha512_final(sha512_context * md, unsigned char *out);
+LIMD_GLUE_API int sha512_update(sha512_context * md, const void *data, size_t inlen);
+LIMD_GLUE_API int sha512(const unsigned char *message, size_t message_len, unsigned char *out);
+
+/* SHA-384 */
+#define sha384_context sha512_context
+
+#define SHA384_DIGEST_LENGTH 48
+
+LIMD_GLUE_API int sha384_init(sha384_context * md);
+LIMD_GLUE_API int sha384_final(sha384_context * md, unsigned char *out);
+LIMD_GLUE_API int sha384_update(sha384_context * md, const void *data, size_t inlen);
+LIMD_GLUE_API int sha384(const unsigned char *message, size_t message_len, unsigned char *out);
+
+#endif
diff --git a/src/Makefile.am b/src/Makefile.am
index 0db7ede..0089b5d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -18,6 +18,10 @@ libimobiledevice_glue_1_0_la_SOURCES =	\
 	cbuf.c          \
 	opack.c         \
 	tlv.c           \
+	sha1.c          \
+	sha256.c        \
+	sha512.c        \
+	fixedint.h      \
 	common.h
 
 if WIN32
diff --git a/src/fixedint.h b/src/fixedint.h
new file mode 100644
index 0000000..1a8745b
--- /dev/null
+++ b/src/fixedint.h
@@ -0,0 +1,72 @@
+/*
+    Portable header to provide the 32 and 64 bits type.
+
+    Not a compatible replacement for <stdint.h>, do not blindly use it as such.
+*/
+
+#if ((defined(__STDC__) && __STDC__ && __STDC_VERSION__ >= 199901L) || (defined(__WATCOMC__) && (defined(_STDINT_H_INCLUDED) || __WATCOMC__ >= 1250)) || (defined(__GNUC__) && (defined(_STDINT_H) || defined(_STDINT_H_) || defined(__UINT_FAST64_TYPE__)) )) && !defined(FIXEDINT_H_INCLUDED)
+    #include <stdint.h>
+    #define FIXEDINT_H_INCLUDED
+
+    #if defined(__WATCOMC__) && __WATCOMC__ >= 1250 && !defined(UINT64_C)
+        #include <limits.h>
+        #define UINT64_C(x) (x + (UINT64_MAX - UINT64_MAX))
+    #endif
+#endif
+
+
+#ifndef FIXEDINT_H_INCLUDED
+    #define FIXEDINT_H_INCLUDED
+    
+    #include <limits.h>
+
+    /* (u)int32_t */
+    #ifndef uint32_t
+        #if (ULONG_MAX == 0xffffffffUL)
+            typedef unsigned long uint32_t;
+        #elif (UINT_MAX == 0xffffffffUL)
+            typedef unsigned int uint32_t;
+        #elif (USHRT_MAX == 0xffffffffUL)
+            typedef unsigned short uint32_t;
+        #endif
+    #endif
+
+
+    #ifndef int32_t
+        #if (LONG_MAX == 0x7fffffffL)
+            typedef signed long int32_t;
+        #elif (INT_MAX == 0x7fffffffL)
+            typedef signed int int32_t;
+        #elif (SHRT_MAX == 0x7fffffffL)
+            typedef signed short int32_t;
+        #endif
+    #endif
+
+
+    /* (u)int64_t */
+    #if (defined(__STDC__) && defined(__STDC_VERSION__) && __STDC__ && __STDC_VERSION__ >= 199901L)
+        typedef long long int64_t;
+        typedef unsigned long long uint64_t;
+
+        #define UINT64_C(v) v ##ULL
+        #define INT64_C(v) v ##LL
+    #elif defined(__GNUC__)
+        __extension__ typedef long long int64_t;
+        __extension__ typedef unsigned long long uint64_t;
+
+        #define UINT64_C(v) v ##ULL
+        #define INT64_C(v) v ##LL
+    #elif defined(__MWERKS__) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__APPLE_CC__) || defined(_LONG_LONG) || defined(_CRAYC)
+        typedef long long int64_t;
+        typedef unsigned long long uint64_t;
+
+        #define UINT64_C(v) v ##ULL
+        #define INT64_C(v) v ##LL
+    #elif (defined(__WATCOMC__) && defined(__WATCOM_INT64__)) || (defined(_MSC_VER) && _INTEGRAL_MAX_BITS >= 64) || (defined(__BORLANDC__) && __BORLANDC__ > 0x460) || defined(__alpha) || defined(__DECC)
+        typedef __int64 int64_t;
+        typedef unsigned __int64 uint64_t;
+
+        #define UINT64_C(v) v ##UI64
+        #define INT64_C(v) v ##I64
+    #endif
+#endif
diff --git a/src/sha1.c b/src/sha1.c
new file mode 100644
index 0000000..46bb8c0
--- /dev/null
+++ b/src/sha1.c
@@ -0,0 +1,517 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
+ */
+
+#include "common.h"
+#include "libimobiledevice-glue/sha.h"
+
+#include "fixedint.h"
+
+#define ROLc(x, y) \
+     ( (((unsigned long)(x)<<(unsigned long)((y)&31)) | \
+       (((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
+#define ROL ROLc
+
+#define STORE32H(x, y)                                                                    \
+    { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255);   \
+      (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
+
+#define LOAD32H(x, y)                           \
+    { x = ((unsigned long)((y)[0] & 255)<<24) | \
+          ((unsigned long)((y)[1] & 255)<<16) | \
+          ((unsigned long)((y)[2] & 255)<<8)  | \
+          ((unsigned long)((y)[3] & 255)); }
+
+#define STORE64H(x, y)                                                                     \
+   { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);     \
+     (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);     \
+     (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);     \
+     (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
+
+#define F0(x,y,z)  (z ^ (x & (y ^ z)))
+#define F1(x,y,z)  (x ^ y ^ z)
+#define F2(x,y,z)  ((x & y) | (z & (x | y)))
+#define F3(x,y,z)  (x ^ y ^ z)
+#ifndef MIN
+   #define MIN(x, y) ( ((x)<(y))?(x):(y) )
+#endif
+
+static int  sha1_compress(sha1_context *md, unsigned char *buf)
+{
+    uint32_t a,b,c,d,e,W[80],i;
+    uint32_t t;
+    /* copy the state into 512-bits into W[0..15] */
+    for (i = 0; i < 16; i++) {
+        LOAD32H(W[i], buf + (4*i));
+    }
+    /* copy state */
+    a = md->state[0];
+    b = md->state[1];
+    c = md->state[2];
+    d = md->state[3];
+    e = md->state[4];
+    /* expand it */
+    for (i = 16; i < 80; i++) {
+        W[i] = ROL(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1); 
+    }
+    /* compress */
+    /* round one */
+    #define FF0(a,b,c,d,e,i) e = (ROLc(a, 5) + F0(b,c,d) + e + W[i] + 0x5a827999UL); b = ROLc(b, 30);
+    #define FF1(a,b,c,d,e,i) e = (ROLc(a, 5) + F1(b,c,d) + e + W[i] + 0x6ed9eba1UL); b = ROLc(b, 30);
+    #define FF2(a,b,c,d,e,i) e = (ROLc(a, 5) + F2(b,c,d) + e + W[i] + 0x8f1bbcdcUL); b = ROLc(b, 30);
+    #define FF3(a,b,c,d,e,i) e = (ROLc(a, 5) + F3(b,c,d) + e + W[i] + 0xca62c1d6UL); b = ROLc(b, 30);
+
+    for (i = 0; i < 20; ) {
+       FF0(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t;
+    }
+    for (; i < 40; ) {
+       FF1(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t;
+    }
+    for (; i < 60; ) {
+       FF2(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t;
+    }
+    for (; i < 80; ) {
+       FF3(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t;
+    }
+
+    #undef FF0
+    #undef FF1
+    #undef FF2
+    #undef FF3
+
+    /* store */
+    md->state[0] = md->state[0] + a;
+    md->state[1] = md->state[1] + b;
+    md->state[2] = md->state[2] + c;
+    md->state[3] = md->state[3] + d;
+    md->state[4] = md->state[4] + e;
+    return 0;
+}
+
+/**
+   Initialize the hash state
+   @param md   The hash state you wish to initialize
+   @return 0 if successful
+*/
+int sha1_init(sha1_context * md)
+{
+    if (md == NULL) return 1;
+    md->state[0] = 0x67452301UL;
+    md->state[1] = 0xefcdab89UL;
+    md->state[2] = 0x98badcfeUL;
+    md->state[3] = 0x10325476UL;
+    md->state[4] = 0xc3d2e1f0UL;
+    md->curlen = 0;
+    md->length = 0;
+    return 0;
+}
+
+/**
+   Process a block of memory though the hash
+   @param md     The hash state
+   @param data   The data to hash
+   @param inlen  The length of the data (octets)
+   @return 0 if successful
+*/
+int sha1_update (sha1_context * md, const void *data, size_t inlen)
+{
+    const unsigned char* in = (const unsigned char*)data;
+    size_t n;
+    size_t i;
+    int           err;
+    if (md == NULL) return 1;
+    if (in == NULL) return 1;
+    if (md->curlen > sizeof(md->buf)) {
+       return 1;
+    }
+    while (inlen > 0) {
+        if (md->curlen == 0 && inlen >= 64) {
+           if ((err = sha1_compress (md, (unsigned char *)in)) != 0) {
+              return err;
+           }
+           md->length += 64 * 8;
+           in             += 64;
+           inlen          -= 64;
+        } else {
+           n = MIN(inlen, (64 - md->curlen));
+
+           for (i = 0; i < n; i++) {
+            md->buf[i + md->curlen] = in[i];
+           }
+
+
+           md->curlen += n;
+           in             += n;
+           inlen          -= n;
+           if (md->curlen == 64) {
+              if ((err = sha1_compress (md, md->buf)) != 0) {
+                 return err;
+              }
+              md->length += 8*64;
+              md->curlen = 0;
+           }
+       }
+    }
+    return 0;
+}
+
+/**
+   Terminate the hash to get the digest
+   @param md  The hash state
+   @param out [out] The destination of the hash (20 bytes)
+   @return 0 if successful
+*/
+int sha1_final(sha1_context * md, unsigned char *out)
+{
+    int i;
+    if (md == NULL) return 1;
+    if (out == NULL) return 1;
+    if (md->curlen >= sizeof(md->buf)) {
+        return 1;
+    }
+    /* increase the length of the message */
+    md->length += md->curlen * 8;
+    /* append the '1' bit */
+    md->buf[md->curlen++] = (unsigned char)0x80;
+    /* if the length is currently above 56 bytes we append zeros
+     * then compress.  Then we can fall back to padding zeros and length
+     * encoding like normal.
+     */
+    if (md->curlen > 56) {
+        while (md->curlen < 64) {
+            md->buf[md->curlen++] = (unsigned char)0;
+        }
+        sha1_compress(md, md->buf);
+        md->curlen = 0;
+    }
+    /* pad upto 56 bytes of zeroes */
+    while (md->curlen < 56) {
+        md->buf[md->curlen++] = (unsigned char)0;
+    }
+    /* store length */
+    STORE64H(md->length, md->buf+56);
+    sha1_compress(md, md->buf);
+    /* copy output */
+    for (i = 0; i < 5; i++) {
+        STORE32H(md->state[i], out+(4*i));
+    }
+    return 0;
+}
+
+int sha1(const unsigned char *message, size_t message_len, unsigned char *out)
+{
+    sha1_context ctx;
+    int ret;
+    if ((ret = sha1_init(&ctx))) return ret;
+    if ((ret = sha1_update(&ctx, message, message_len))) return ret;
+    if ((ret = sha1_final(&ctx, out))) return ret;
+    return 0;
+}
+
+#if 0
+
+/*
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+Test Vectors (from FIPS PUB 180-1)
+"abc"
+  A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
+"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
+  84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
+A million repetitions of "a"
+  34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
+*/
+
+/* #define LITTLE_ENDIAN * This should be #define'd already, if true. */
+/* #define SHA1HANDSOFF * Copies data before messing with it. */
+
+#define SHA1HANDSOFF
+
+#include <stdio.h>
+#include <string.h>
+
+/* for uint32_t */
+#include <stdint.h>
+
+#include "common.h"
+#include "libimobiledevice-glue/sha.h"
+
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#elif BYTE_ORDER == BIG_ENDIAN
+#define blk0(i) block->l[i]
+#else
+#error "Endianness not defined!"
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+
+static void SHA1Transform(
+    uint32_t state[5],
+    const unsigned char buffer[64]
+)
+{
+    uint32_t a, b, c, d, e;
+
+    typedef union
+    {
+        unsigned char c[64];
+        uint32_t l[16];
+    } CHAR64LONG16;
+
+#ifdef SHA1HANDSOFF
+    CHAR64LONG16 block[1];      /* use array to appear as a pointer */
+
+    memcpy(block, buffer, 64);
+#else
+    /* The following had better never be used because it causes the
+     * pointer-to-const buffer to be cast into a pointer to non-const.
+     * And the result is written through.  I threw a "const" in, hoping
+     * this will cause a diagnostic.
+     */
+    CHAR64LONG16 *block = (const CHAR64LONG16 *) buffer;
+#endif
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a, b, c, d, e, 0);
+    R0(e, a, b, c, d, 1);
+    R0(d, e, a, b, c, 2);
+    R0(c, d, e, a, b, 3);
+    R0(b, c, d, e, a, 4);
+    R0(a, b, c, d, e, 5);
+    R0(e, a, b, c, d, 6);
+    R0(d, e, a, b, c, 7);
+    R0(c, d, e, a, b, 8);
+    R0(b, c, d, e, a, 9);
+    R0(a, b, c, d, e, 10);
+    R0(e, a, b, c, d, 11);
+    R0(d, e, a, b, c, 12);
+    R0(c, d, e, a, b, 13);
+    R0(b, c, d, e, a, 14);
+    R0(a, b, c, d, e, 15);
+    R1(e, a, b, c, d, 16);
+    R1(d, e, a, b, c, 17);
+    R1(c, d, e, a, b, 18);
+    R1(b, c, d, e, a, 19);
+    R2(a, b, c, d, e, 20);
+    R2(e, a, b, c, d, 21);
+    R2(d, e, a, b, c, 22);
+    R2(c, d, e, a, b, 23);
+    R2(b, c, d, e, a, 24);
+    R2(a, b, c, d, e, 25);
+    R2(e, a, b, c, d, 26);
+    R2(d, e, a, b, c, 27);
+    R2(c, d, e, a, b, 28);
+    R2(b, c, d, e, a, 29);
+    R2(a, b, c, d, e, 30);
+    R2(e, a, b, c, d, 31);
+    R2(d, e, a, b, c, 32);
+    R2(c, d, e, a, b, 33);
+    R2(b, c, d, e, a, 34);
+    R2(a, b, c, d, e, 35);
+    R2(e, a, b, c, d, 36);
+    R2(d, e, a, b, c, 37);
+    R2(c, d, e, a, b, 38);
+    R2(b, c, d, e, a, 39);
+    R3(a, b, c, d, e, 40);
+    R3(e, a, b, c, d, 41);
+    R3(d, e, a, b, c, 42);
+    R3(c, d, e, a, b, 43);
+    R3(b, c, d, e, a, 44);
+    R3(a, b, c, d, e, 45);
+    R3(e, a, b, c, d, 46);
+    R3(d, e, a, b, c, 47);
+    R3(c, d, e, a, b, 48);
+    R3(b, c, d, e, a, 49);
+    R3(a, b, c, d, e, 50);
+    R3(e, a, b, c, d, 51);
+    R3(d, e, a, b, c, 52);
+    R3(c, d, e, a, b, 53);
+    R3(b, c, d, e, a, 54);
+    R3(a, b, c, d, e, 55);
+    R3(e, a, b, c, d, 56);
+    R3(d, e, a, b, c, 57);
+    R3(c, d, e, a, b, 58);
+    R3(b, c, d, e, a, 59);
+    R4(a, b, c, d, e, 60);
+    R4(e, a, b, c, d, 61);
+    R4(d, e, a, b, c, 62);
+    R4(c, d, e, a, b, 63);
+    R4(b, c, d, e, a, 64);
+    R4(a, b, c, d, e, 65);
+    R4(e, a, b, c, d, 66);
+    R4(d, e, a, b, c, 67);
+    R4(c, d, e, a, b, 68);
+    R4(b, c, d, e, a, 69);
+    R4(a, b, c, d, e, 70);
+    R4(e, a, b, c, d, 71);
+    R4(d, e, a, b, c, 72);
+    R4(c, d, e, a, b, 73);
+    R4(b, c, d, e, a, 74);
+    R4(a, b, c, d, e, 75);
+    R4(e, a, b, c, d, 76);
+    R4(d, e, a, b, c, 77);
+    R4(c, d, e, a, b, 78);
+    R4(b, c, d, e, a, 79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+#ifdef SHA1HANDSOFF
+    memset(block, '\0', sizeof(block));
+#endif
+}
+
+
+/* SHA1Init - Initialize new context */
+
+void sha1_init(
+    sha1_context * context
+)
+{
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+
+/* Run your data through this. */
+
+void sha1_update(
+    sha1_context * context,
+    const void *data,
+    size_t len
+)
+{
+    size_t i;
+
+    size_t j;
+
+    j = context->count[0];
+    if ((context->count[0] += len << 3) < j)
+        context->count[1]++;
+    context->count[1] += (len >> 29);
+    j = (j >> 3) & 63;
+    if ((j + len) > 63)
+    {
+        memcpy(&context->buffer[j], data, (i = 64 - j));
+        SHA1Transform(context->state, context->buffer);
+        for (; i + 63 < len; i += 64)
+        {
+            SHA1Transform(context->state, (unsigned char*)data + i);
+        }
+        j = 0;
+    }
+    else
+        i = 0;
+    memcpy(&context->buffer[j], (unsigned char*)data + i, len - i);
+}
+
+
+/* Add padding and return the message digest. */
+
+void sha1_final(
+    sha1_context * context,
+    unsigned char digest[20]
+)
+{
+    unsigned i;
+
+    unsigned char finalcount[8];
+
+    unsigned char c;
+
+#if 0    /* untested "improvement" by DHR */
+    /* Convert context->count to a sequence of bytes
+     * in finalcount.  Second element first, but
+     * big-endian order within element.
+     * But we do it all backwards.
+     */
+    unsigned char *fcp = &finalcount[8];
+
+    for (i = 0; i < 2; i++)
+    {
+        uint32_t t = context->count[i];
+
+        int j;
+
+        for (j = 0; j < 4; t >>= 8, j++)
+            *--fcp = (unsigned char) t}
+#else
+    for (i = 0; i < 8; i++)
+    {
+        finalcount[i] = (unsigned char) ((context->count[(i >= 4 ? 0 : 1)] >> ((3 - (i & 3)) * 8)) & 255);      /* Endian independent */
+    }
+#endif
+    c = 0200;
+    sha1_update(context, &c, 1);
+    while ((context->count[0] & 504) != 448)
+    {
+        c = 0000;
+        sha1_update(context, &c, 1);
+    }
+    sha1_update(context, finalcount, 8); /* Should cause a SHA1Transform() */
+    for (i = 0; i < 20; i++)
+    {
+        digest[i] = (unsigned char)
+            ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
+    }
+    /* Wipe variables */
+    memset(context, '\0', sizeof(*context));
+    memset(&finalcount, '\0', sizeof(finalcount));
+}
+
+void sha1(
+    const unsigned char *str,
+    size_t len,
+    unsigned char *hash_out
+)
+{
+    sha1_context ctx;
+    size_t ii;
+
+    sha1_init(&ctx);
+    for (ii=0; ii<len; ii+=1)
+        sha1_update(&ctx, str + ii, 1);
+    sha1_final(&ctx, hash_out);
+}
+
+
+#endif
diff --git a/src/sha256.c b/src/sha256.c
new file mode 100644
index 0000000..71be516
--- /dev/null
+++ b/src/sha256.c
@@ -0,0 +1,265 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
+ */
+
+#include "common.h"
+#include "libimobiledevice-glue/sha.h"
+
+#include "fixedint.h"
+
+/* the K array */
+static const uint32_t K[64] = {
+    0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
+    0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
+    0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
+    0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+    0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
+    0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
+    0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
+    0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+    0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
+    0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
+    0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
+    0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+    0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+/* Various logical functions */
+
+#define RORc(x, y) \
+    ( ((((unsigned long)(x)&0xFFFFFFFFUL)>>(unsigned long)((y)&31)) | \
+      ((unsigned long)(x)<<(unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
+
+#define STORE32H(x, y)                                                                    \
+    { (y)[0] = (unsigned char)(((x)>>24)&255); (y)[1] = (unsigned char)(((x)>>16)&255);   \
+      (y)[2] = (unsigned char)(((x)>>8)&255); (y)[3] = (unsigned char)((x)&255); }
+
+#define LOAD32H(x, y)                           \
+    { x = ((unsigned long)((y)[0] & 255)<<24) | \
+          ((unsigned long)((y)[1] & 255)<<16) | \
+          ((unsigned long)((y)[2] & 255)<<8)  | \
+          ((unsigned long)((y)[3] & 255)); }
+
+#define STORE64H(x, y)                                                                     \
+   { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);     \
+     (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);     \
+     (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);     \
+     (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
+
+#define Ch(x,y,z)       (z ^ (x & (y ^ z)))
+#define Maj(x,y,z)      (((x | y) & z) | (x & y)) 
+#define S(x, n)         RORc((x),(n))
+#define R(x, n)         (((x)&0xFFFFFFFFUL)>>(n))
+#define Sigma0(x)       (S(x, 2) ^ S(x, 13) ^ S(x, 22))
+#define Sigma1(x)       (S(x, 6) ^ S(x, 11) ^ S(x, 25))
+#define Gamma0(x)       (S(x, 7) ^ S(x, 18) ^ R(x, 3))
+#define Gamma1(x)       (S(x, 17) ^ S(x, 19) ^ R(x, 10))
+#ifndef MIN
+   #define MIN(x, y) ( ((x)<(y))?(x):(y) )
+#endif
+
+/* compress 256-bits */
+static int sha256_compress(sha256_context * md, unsigned char *buf)
+{
+    uint32_t S[8], W[64], t0, t1;
+    uint32_t t;
+    int i;
+    /* copy state into S */
+    for (i = 0; i < 8; i++) {
+        S[i] = md->state[i];
+    }
+    /* copy the state into 512-bits into W[0..15] */
+    for (i = 0; i < 16; i++) {
+        LOAD32H(W[i], buf + (4*i));
+    }
+    /* fill W[16..63] */
+    for (i = 16; i < 64; i++) {
+        W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
+    }
+    /* Compress */
+    #define RND(a,b,c,d,e,f,g,h,i) \
+    t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
+    t1 = Sigma0(a) + Maj(a, b, c); \
+    d += t0; \
+    h  = t0 + t1;
+    for (i = 0; i < 64; ++i) {
+        RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i);
+        t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4]; 
+        S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t;
+    }
+    #undef RND
+    /* feedback */
+    for (i = 0; i < 8; i++) {
+        md->state[i] = md->state[i] + S[i];
+    }
+    return 0;
+}
+
+/**
+   Initialize the hash state
+   @param md   The hash state you wish to initialize
+   @return CRYPT_OK if successful
+*/
+int sha256_init(sha256_context * md)
+{
+    if (md == NULL) return 1;
+    md->curlen = 0;
+    md->length = 0;
+    md->state[0] = 0x6A09E667UL;
+    md->state[1] = 0xBB67AE85UL;
+    md->state[2] = 0x3C6EF372UL;
+    md->state[3] = 0xA54FF53AUL;
+    md->state[4] = 0x510E527FUL;
+    md->state[5] = 0x9B05688CUL;
+    md->state[6] = 0x1F83D9ABUL;
+    md->state[7] = 0x5BE0CD19UL;
+    md->num_dwords = 8;
+    return 0;
+}
+
+/**
+   Process a block of memory though the hash
+   @param md     The hash state
+   @param data   The data to hash
+   @param inlen  The length of the data (octets)
+   @return 0 if successful
+*/
+int sha256_update (sha256_context * md, const void *data, size_t inlen)
+{
+    const unsigned char* in = (const unsigned char*)data;
+    size_t n;
+    size_t i;
+    int           err;
+    if (md == NULL) return 1;
+    if (in == NULL) return 1;
+    if (md->curlen > sizeof(md->buf)) {
+       return 1;
+    }
+    while (inlen > 0) {
+        if (md->curlen == 0 && inlen >= 64) {
+           if ((err = sha256_compress (md, (unsigned char *)in)) != 0) {
+              return err;
+           }
+           md->length += 64 * 8;
+           in             += 64;
+           inlen          -= 64;
+        } else {
+           n = MIN(inlen, (64 - md->curlen));
+
+           for (i = 0; i < n; i++) {
+            md->buf[i + md->curlen] = in[i];
+           }
+
+
+           md->curlen += n;
+           in             += n;
+           inlen          -= n;
+           if (md->curlen == 64) {
+              if ((err = sha256_compress (md, md->buf)) != 0) {
+                 return err;
+              }
+              md->length += 8*64;
+              md->curlen = 0;
+           }
+       }
+    }
+    return 0;
+}
+
+/**
+   Terminate the hash to get the digest
+   @param md  The hash state
+   @param out [out] The destination of the hash (32 bytes)
+   @return 0 if successful
+*/
+int sha256_final(sha256_context * md, unsigned char *out)
+{
+    int i;
+    if (md == NULL) return 1;
+    if (out == NULL) return 1;
+    if (md->curlen >= sizeof(md->buf)) {
+       return 1;
+    }
+    /* increase the length of the message */
+    md->length += md->curlen * 8;
+    /* append the '1' bit */
+    md->buf[md->curlen++] = (unsigned char)0x80;
+    /* if the length is currently above 56 bytes we append zeros
+     * then compress.  Then we can fall back to padding zeros and length
+     * encoding like normal.
+     */
+    if (md->curlen > 56) {
+        while (md->curlen < 64) {
+            md->buf[md->curlen++] = (unsigned char)0;
+        }
+        sha256_compress(md, md->buf);
+        md->curlen = 0;
+    }
+    /* pad upto 56 bytes of zeroes */
+    while (md->curlen < 56) {
+        md->buf[md->curlen++] = (unsigned char)0;
+    }
+    /* store length */
+    STORE64H(md->length, md->buf+56);
+    sha256_compress(md, md->buf);
+    /* copy output */
+    for (i = 0; i < md->num_dwords; i++) {
+        STORE32H(md->state[i], out+(4*i));
+    }
+    return 0;
+}
+
+int sha256(const unsigned char *message, size_t message_len, unsigned char *out)
+{
+    sha256_context ctx;
+    int ret;
+    if ((ret = sha256_init(&ctx))) return ret;
+    if ((ret = sha256_update(&ctx, message, message_len))) return ret;
+    if ((ret = sha256_final(&ctx, out))) return ret;
+    return 0;
+}
+
+int sha224_init(sha224_context * md) {
+    if (md == NULL) return 1;
+
+    md->curlen = 0;
+    md->length = 0;
+    md->state[0] = 0xc1059ed8UL;
+    md->state[1] = 0x367cd507UL;
+    md->state[2] = 0x3070dd17UL;
+    md->state[3] = 0xf70e5939UL;
+    md->state[4] = 0xffc00b31UL;
+    md->state[5] = 0x68581511UL;
+    md->state[6] = 0x64f98fa7UL;
+    md->state[7] = 0xbefa4fa4UL;
+    md->num_dwords = 6;
+
+    return 0;
+}
+
+int sha224_update(sha224_context * md, const void *data, size_t inlen)
+{
+    return sha256_update(md, data, inlen);
+}
+
+int sha224_final(sha224_context * md, unsigned char* out)
+{
+    return sha256_final(md, out);
+}
+
+int sha224(const unsigned char *message, size_t message_len, unsigned char *out)
+{
+    sha224_context ctx;
+    int ret;
+    if ((ret = sha224_init(&ctx))) return ret;
+    if ((ret = sha224_update(&ctx, message, message_len))) return ret;
+    if ((ret = sha224_final(&ctx, out))) return ret;
+    return 0;
+}
diff --git a/src/sha512.c b/src/sha512.c
new file mode 100644
index 0000000..62c7159
--- /dev/null
+++ b/src/sha512.c
@@ -0,0 +1,315 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ *
+ * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
+ */
+
+#include "fixedint.h"
+
+#include "common.h"
+#include "libimobiledevice-glue/sha.h"
+
+/* the K array */
+static const uint64_t K[80] = {
+    UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd), 
+    UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
+    UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019), 
+    UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
+    UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe), 
+    UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
+    UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1), 
+    UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
+    UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3), 
+    UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
+    UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483), 
+    UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
+    UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210), 
+    UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
+    UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725), 
+    UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
+    UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926), 
+    UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
+    UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8), 
+    UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
+    UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
+    UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
+    UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910), 
+    UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
+    UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53), 
+    UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
+    UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb), 
+    UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
+    UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60), 
+    UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
+    UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9), 
+    UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
+    UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207), 
+    UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
+    UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6), 
+    UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
+    UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493), 
+    UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
+    UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a), 
+    UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817)
+};
+
+/* Various logical functions */
+
+#define ROR64c(x, y) \
+    ( ((((x)&UINT64_C(0xFFFFFFFFFFFFFFFF))>>((uint64_t)(y)&UINT64_C(63))) | \
+      ((x)<<((uint64_t)(64-((y)&UINT64_C(63)))))) & UINT64_C(0xFFFFFFFFFFFFFFFF))
+
+#define STORE64H(x, y)                                                                     \
+   { (y)[0] = (unsigned char)(((x)>>56)&255); (y)[1] = (unsigned char)(((x)>>48)&255);     \
+     (y)[2] = (unsigned char)(((x)>>40)&255); (y)[3] = (unsigned char)(((x)>>32)&255);     \
+     (y)[4] = (unsigned char)(((x)>>24)&255); (y)[5] = (unsigned char)(((x)>>16)&255);     \
+     (y)[6] = (unsigned char)(((x)>>8)&255); (y)[7] = (unsigned char)((x)&255); }
+
+#define LOAD64H(x, y)                                                      \
+   { x = (((uint64_t)((y)[0] & 255))<<56)|(((uint64_t)((y)[1] & 255))<<48) | \
+         (((uint64_t)((y)[2] & 255))<<40)|(((uint64_t)((y)[3] & 255))<<32) | \
+         (((uint64_t)((y)[4] & 255))<<24)|(((uint64_t)((y)[5] & 255))<<16) | \
+         (((uint64_t)((y)[6] & 255))<<8)|(((uint64_t)((y)[7] & 255))); }
+
+
+#define Ch(x,y,z)       (z ^ (x & (y ^ z)))
+#define Maj(x,y,z)      (((x | y) & z) | (x & y)) 
+#define S(x, n)         ROR64c(x, n)
+#define R(x, n)         (((x) &UINT64_C(0xFFFFFFFFFFFFFFFF))>>((uint64_t)n))
+#define Sigma0(x)       (S(x, 28) ^ S(x, 34) ^ S(x, 39))
+#define Sigma1(x)       (S(x, 14) ^ S(x, 18) ^ S(x, 41))
+#define Gamma0(x)       (S(x, 1) ^ S(x, 8) ^ R(x, 7))
+#define Gamma1(x)       (S(x, 19) ^ S(x, 61) ^ R(x, 6))
+#ifndef MIN
+   #define MIN(x, y) ( ((x)<(y))?(x):(y) )
+#endif
+
+/* compress 1024-bits */
+static int sha512_compress(sha512_context *md, unsigned char *buf)
+{
+    uint64_t S[8], W[80], t0, t1;
+    int i;
+
+    /* copy state into S */
+    for (i = 0; i < 8; i++) {
+        S[i] = md->state[i];
+    }
+
+    /* copy the state into 1024-bits into W[0..15] */
+    for (i = 0; i < 16; i++) {
+        LOAD64H(W[i], buf + (8*i));
+    }
+
+    /* fill W[16..79] */
+    for (i = 16; i < 80; i++) {
+        W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
+    }
+
+    /* Compress */
+    #define RND(a,b,c,d,e,f,g,h,i) \
+    t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
+    t1 = Sigma0(a) + Maj(a, b, c);\
+    d += t0; \
+    h  = t0 + t1;
+
+    for (i = 0; i < 80; i += 8) {
+        RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
+        RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
+        RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
+        RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
+        RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
+        RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
+        RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
+        RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
+    }
+
+    #undef RND
+
+    /* feedback */
+    for (i = 0; i < 8; i++) {
+        md->state[i] = md->state[i] + S[i];
+    }
+
+    return 0;
+}
+
+
+/**
+   Initialize the hash state
+   @param md   The hash state you wish to initialize
+   @return 0 if successful
+*/
+int sha512_init(sha512_context * md) {
+    if (md == NULL) return 1;
+
+    md->curlen = 0;
+    md->length = 0;
+    md->state[0] = UINT64_C(0x6a09e667f3bcc908);
+    md->state[1] = UINT64_C(0xbb67ae8584caa73b);
+    md->state[2] = UINT64_C(0x3c6ef372fe94f82b);
+    md->state[3] = UINT64_C(0xa54ff53a5f1d36f1);
+    md->state[4] = UINT64_C(0x510e527fade682d1);
+    md->state[5] = UINT64_C(0x9b05688c2b3e6c1f);
+    md->state[6] = UINT64_C(0x1f83d9abfb41bd6b);
+    md->state[7] = UINT64_C(0x5be0cd19137e2179);
+    md->num_qwords = 8;
+
+    return 0;
+}
+
+/**
+   Process a block of memory though the hash
+   @param md     The hash state
+   @param data   The data to hash
+   @param inlen  The length of the data (octets)
+   @return 0 if successful
+*/
+int sha512_update (sha512_context * md, const void *data, size_t inlen)
+{
+    const unsigned char* in = (const unsigned char*)data;
+    size_t n;
+    size_t i;
+    int           err;
+    if (md == NULL) return 1;
+    if (in == NULL) return 1;
+    if (md->curlen > sizeof(md->buf)) {
+       return 1;
+    }
+    while (inlen > 0) {
+        if (md->curlen == 0 && inlen >= 128) {
+           if ((err = sha512_compress (md, (unsigned char *)in)) != 0) {
+              return err;
+           }
+           md->length += 128 * 8;
+           in             += 128;
+           inlen          -= 128;
+        } else {
+           n = MIN(inlen, (128 - md->curlen));
+
+           for (i = 0; i < n; i++) {
+            md->buf[i + md->curlen] = in[i];
+           }
+
+
+           md->curlen += n;
+           in             += n;
+           inlen          -= n;
+           if (md->curlen == 128) {
+              if ((err = sha512_compress (md, md->buf)) != 0) {
+                 return err;
+              }
+              md->length += 8*128;
+              md->curlen = 0;
+           }
+       }
+    }
+    return 0;
+}
+
+/**
+   Terminate the hash to get the digest
+   @param md  The hash state
+   @param out [out] The destination of the hash (64 bytes)
+   @return 0 if successful
+*/
+int sha512_final(sha512_context * md, unsigned char *out)
+{
+    int i;
+
+    if (md == NULL) return 1;
+    if (out == NULL) return 1;
+
+    if (md->curlen >= sizeof(md->buf)) {
+        return 1;
+    }
+
+    /* increase the length of the message */
+    md->length += md->curlen * UINT64_C(8);
+
+    /* append the '1' bit */
+    md->buf[md->curlen++] = (unsigned char)0x80;
+
+    /* if the length is currently above 112 bytes we append zeros
+     * then compress.  Then we can fall back to padding zeros and length
+     * encoding like normal.
+     */
+    if (md->curlen > 112) {
+        while (md->curlen < 128) {
+            md->buf[md->curlen++] = (unsigned char)0;
+        }
+        sha512_compress(md, md->buf);
+        md->curlen = 0;
+    }
+
+    /* pad upto 120 bytes of zeroes 
+     * note: that from 112 to 120 is the 64 MSB of the length.  We assume that you won't hash
+     * > 2^64 bits of data... :-)
+     */
+    while (md->curlen < 120) {
+        md->buf[md->curlen++] = (unsigned char)0;
+    }
+
+    /* store length */
+    STORE64H(md->length, md->buf+120);
+    sha512_compress(md, md->buf);
+
+    /* copy output */
+    for (i = 0; i < md->num_qwords; i++) {
+        STORE64H(md->state[i], out+(8*i));
+    }
+
+    return 0;
+}
+
+int sha512(const unsigned char *message, size_t message_len, unsigned char *out)
+{
+    sha512_context ctx;
+    int ret;
+    if ((ret = sha512_init(&ctx))) return ret;
+    if ((ret = sha512_update(&ctx, message, message_len))) return ret;
+    if ((ret = sha512_final(&ctx, out))) return ret;
+    return 0;
+}
+
+int sha384_init(sha384_context * md) {
+    if (md == NULL) return 1;
+
+    md->curlen = 0;
+    md->length = 0;
+    md->state[0] = UINT64_C(0xcbbb9d5dc1059ed8);
+    md->state[1] = UINT64_C(0x629a292a367cd507);
+    md->state[2] = UINT64_C(0x9159015a3070dd17);
+    md->state[3] = UINT64_C(0x152fecd8f70e5939);
+    md->state[4] = UINT64_C(0x67332667ffc00b31);
+    md->state[5] = UINT64_C(0x8eb44a8768581511);
+    md->state[6] = UINT64_C(0xdb0c2e0d64f98fa7);
+    md->state[7] = UINT64_C(0x47b5481dbefa4fa4);
+    md->num_qwords = 6;
+
+    return 0;
+}
+
+int sha384_update(sha384_context * md, const void *data, size_t inlen)
+{
+    return sha512_update(md, data, inlen);
+}
+
+int sha384_final(sha384_context * md, unsigned char* out)
+{
+    return sha512_final(md, out);
+}
+
+int sha384(const unsigned char *message, size_t message_len, unsigned char *out)
+{
+    sha384_context ctx;
+    int ret;
+    if ((ret = sha384_init(&ctx))) return ret;
+    if ((ret = sha384_update(&ctx, message, message_len))) return ret;
+    if ((ret = sha384_final(&ctx, out))) return ret;
+    return 0;
+}