sha2.c File Reference

#include <string.h>
#include "sha2.h"
#include <rz_util/rz_mem.h>

Go to the source code of this file.

Macros
#define	WEAK_ALIASING   0
#define	LITTLE_ENDIAN   1234
#define	BIG_ENDIAN   4321
#define	BYTE_ORDER   LITTLE_ENDIAN
#define	SHA256_SHORT_BLOCK_LENGTH   (SHA256_BLOCK_LENGTH - 8)
#define	SHA384_SHORT_BLOCK_LENGTH   (SHA384_BLOCK_LENGTH - 16)
#define	SHA512_SHORT_BLOCK_LENGTH   (SHA512_BLOCK_LENGTH - 16)
#define	REVERSE32(w, x)
#define	REVERSE64(w, x)
#define	ADDINC128(w, n)
#define	R(b, x)   ((x) >> (b))
#define	S32(b, x)   (((x) >> (b)) | ((x) << (32 - (b))))
#define	S64(b, x)   (((x) >> (b)) | ((x) << (64 - (b))))
#define	Ch(x, y, z)   (((x) & (y)) ^ ((~(x)) & (z)))
#define	Maj(x, y, z)   (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
#define	Sigma0_256(x)   (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x)))
#define	Sigma1_256(x)   (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x)))
#define	sigma0_256(x)   (S32(7, (x)) ^ S32(18, (x)) ^ R(3, (x)))
#define	sigma1_256(x)   (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x)))
#define	Sigma0_512(x)   (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
#define	Sigma1_512(x)   (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
#define	sigma0_512(x)   (S64(1, (x)) ^ S64(8, (x)) ^ R(7, (x)))
#define	sigma1_512(x)   (S64(19, (x)) ^ S64(61, (x)) ^ R(6, (x)))

Functions
void	SHA512_Last (RZ_SHA512_CTX *)
void	SHA256_Transform (RZ_SHA256_CTX *, const ut32 *)
void	SHA512_Transform (RZ_SHA512_CTX *, const ut64 *)
void	SHA256_Init (RZ_SHA256_CTX *context)
void	SHA256_Update (RZ_SHA256_CTX *context, const ut8 *data, size_t len)
void	SHA256_Final (ut8 *digest, RZ_SHA256_CTX *context)
char *	SHA256_End (RZ_SHA256_CTX *context, char buffer[])
char *	SHA256_Data (const ut8 *data, size_t len, char digest[SHA256_DIGEST_STRING_LENGTH])
void	SHA512_Init (RZ_SHA512_CTX *context)
void	SHA512_Update (RZ_SHA512_CTX *context, const ut8 *data, size_t len)
void	SHA512_Final (ut8 digest[], RZ_SHA512_CTX *context)
char *	SHA512_End (RZ_SHA512_CTX *context, char buffer[])
char *	SHA512_Data (const ut8 *data, size_t len, char digest[SHA512_DIGEST_STRING_LENGTH])
void	SHA384_Init (RZ_SHA384_CTX *context)
void	SHA384_Update (RZ_SHA384_CTX *context, const ut8 *data, size_t len)
void	SHA384_Final (ut8 digest[], RZ_SHA384_CTX *context)
char *	SHA384_End (RZ_SHA384_CTX *context, char buffer[])
char *	SHA384_Data (const ut8 *data, size_t len, char digest[SHA384_DIGEST_STRING_LENGTH])

Variables
static const ut32	K256 [64]
static const ut32	sha256_initial_hash_value [8]
static const ut64	K512 [80]
static const ut64	sha384_initial_hash_value [8]
static const ut64	sha512_initial_hash_value [8]
static const char *	sha2_hex_digits = "0123456789abcdef"

Macro Definition Documentation

ADDINC128

#define ADDINC128	(		w,
			n
	)

Value:

    { \
        (w)[0] += (ut64)(n); \
        if ((w)[0] < (n)) { \
            (w)[1]++; \
        } \
    }

Definition at line 128 of file sha2.c.

BIG_ENDIAN

#define BIG_ENDIAN   4321

Definition at line 89 of file sha2.c.

BYTE_ORDER

#define BYTE_ORDER   LITTLE_ENDIAN

Definition at line 90 of file sha2.c.

Ch

#define Ch	(		x,
			y,
			z
	)		(((x) & (y)) ^ ((~(x)) & (z)))

Definition at line 153 of file sha2.c.

LITTLE_ENDIAN

#define LITTLE_ENDIAN   1234

Definition at line 88 of file sha2.c.

Maj

#define Maj	(		x,
			y,
			z
	)		(((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))

Definition at line 154 of file sha2.c.

R

#define R	(		b,
			x
	)		((x) >> (b))

Definition at line 146 of file sha2.c.

REVERSE32

#define REVERSE32	(		w,
			x
	)

Value:

    { \
        ut32 tmp = (w); \
        tmp = (tmp >> 16) | (tmp << 16); \
        (x) = ((tmp & 0xff00ff00UL) >> 8) | ((tmp & 0x00ff00ffUL) << 8); \
    }

Definition at line 106 of file sha2.c.

REVERSE64

#define REVERSE64	(		w,
			x
	)

Value:

    { \
        ut64 tmp = (w); \
        tmp = (tmp >> 32) | (tmp << 32); \
        tmp = ((tmp & 0xff00ff00ff00ff00ULL) >> 8) | \
            ((tmp & 0x00ff00ff00ff00ffULL) << 8); \
        (x) = ((tmp & 0xffff0000ffff0000ULL) >> 16) | \
            ((tmp & 0x0000ffff0000ffffULL) << 16); \
    }

Definition at line 112 of file sha2.c.

S32

#define S32	(		b,
			x
	)		(((x) >> (b)) | ((x) << (32 - (b))))

Definition at line 148 of file sha2.c.

S64

#define S64	(		b,
			x
	)		(((x) >> (b)) | ((x) << (64 - (b))))

Definition at line 150 of file sha2.c.

SHA256_SHORT_BLOCK_LENGTH

#define SHA256_SHORT_BLOCK_LENGTH   (SHA256_BLOCK_LENGTH - 8)

Definition at line 100 of file sha2.c.

SHA384_SHORT_BLOCK_LENGTH

#define SHA384_SHORT_BLOCK_LENGTH   (SHA384_BLOCK_LENGTH - 16)

Definition at line 101 of file sha2.c.

SHA512_SHORT_BLOCK_LENGTH

#define SHA512_SHORT_BLOCK_LENGTH   (SHA512_BLOCK_LENGTH - 16)

Definition at line 102 of file sha2.c.

Sigma0_256

#define Sigma0_256

(

x

)

(S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x)))

Definition at line 157 of file sha2.c.

sigma0_256

#define sigma0_256

(

x

)

(S32(7, (x)) ^ S32(18, (x)) ^ R(3, (x)))

Definition at line 159 of file sha2.c.

Sigma0_512

#define Sigma0_512

(

x

)

(S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))

Definition at line 163 of file sha2.c.

sigma0_512

#define sigma0_512

(

x

)

(S64(1, (x)) ^ S64(8, (x)) ^ R(7, (x)))

Definition at line 165 of file sha2.c.

Sigma1_256

#define Sigma1_256

(

x

)

(S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x)))

Definition at line 158 of file sha2.c.

sigma1_256

#define sigma1_256

(

x

)

(S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x)))

Definition at line 160 of file sha2.c.

Sigma1_512

#define Sigma1_512

(

x

)

(S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))

Definition at line 164 of file sha2.c.

sigma1_512

#define sigma1_512

(

x

)

(S64(19, (x)) ^ S64(61, (x)) ^ R(6, (x)))

Definition at line 166 of file sha2.c.

WEAK_ALIASING

#define WEAK_ALIASING   0

Definition at line 42 of file sha2.c.

Function Documentation

SHA256_Data()

char* SHA256_Data	(	const ut8 *	data,
		size_t	len,
		char	digest[SHA256_DIGEST_STRING_LENGTH]
	)

Definition at line 597 of file sha2.c.

                                                                                         {
    RZ_SHA256_CTX context;
 
    SHA256_Init(&context);
    SHA256_Update(&context, data, len);
    return SHA256_End(&context, digest);
}

References len, SHA256_End(), SHA256_Init(), and SHA256_Update().

SHA256_End()

char* SHA256_End	(	RZ_SHA256_CTX *	context,
		char	buffer[]
	)

Definition at line 574 of file sha2.c.

                                                        {
    ut8 digest[SHA256_DIGEST_LENGTH], *d = digest;
    int i;
 
    if (!context) {
        return NULL;
    }
 
    if (buffer) {
        SHA256_Final(digest, context);
        for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
            *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
            *buffer++ = sha2_hex_digits[*d & 0x0f];
            d++;
        }
        *buffer = (char)0;
    } else {
        rz_mem_memzero(context, sizeof(*context));
    }
    rz_mem_memzero(digest, SHA256_DIGEST_LENGTH);
    return buffer;
}

References d, i, NULL, rz_mem_memzero(), SHA256_DIGEST_LENGTH, SHA256_Final(), and sha2_hex_digits.

Referenced by SHA256_Data().

SHA256_Final()

void SHA256_Final	(	ut8 *	digest,
		RZ_SHA256_CTX *	context
	)

Definition at line 503 of file sha2.c.

                                                       {
    ut32 *d = (ut32 *)digest;
    unsigned int usedspace;
 
    /* Sanity check: */
    if (!context) {
        return;
    }
 
    /* If no digest buffer is passed, we don't bother doing this: */
    if (digest != (ut8 *)0) {
        usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
#if BYTE_ORDER == LITTLE_ENDIAN
        /* Convert FROM host byte order */
        REVERSE64(context->bitcount, context->bitcount);
#endif
        if (usedspace > 0) {
            /* Begin padding with a 1 bit: */
            context->buffer[usedspace++] = 0x80;
 
            if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) {
                /* Set-up for the last transform: */
                memset(&context->buffer[usedspace], 0, SHA256_SHORT_BLOCK_LENGTH - usedspace);
            } else {
                if (usedspace < SHA256_BLOCK_LENGTH) {
                    memset(&context->buffer[usedspace], 0, SHA256_BLOCK_LENGTH - usedspace);
                }
                /* Do second-to-last transform: */
                SHA256_Transform(context, (ut32 *)context->buffer);
 
                /* And set-up for the last transform: */
                memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
            }
        } else {
            /* Set-up for the last transform: */
            memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
 
            /* Begin padding with a 1 bit: */
            *context->buffer = 0x80;
        }
        /* Set the bit count: */
#if WEAK_ALIASING
        *(ut64 *)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
#else
        {
            ut64 *p = (ut64 *)((ut8 *)context->buffer + SHA256_SHORT_BLOCK_LENGTH);
            *p = (ut64)context->bitcount;
        }
#endif
 
        /* Final transform: */
        SHA256_Transform(context, (ut32 *)context->buffer);
 
#if BYTE_ORDER == LITTLE_ENDIAN
        {
            /* Convert TO host byte order */
            int j;
            for (j = 0; j < 8; j++) {
                REVERSE32(context->state[j], context->state[j]);
                *d++ = context->state[j];
            }
        }
#else
        memcpy(d, context->state, SHA256_DIGEST_LENGTH);
#endif
    }
 
    /* Clean up state data: */
    rz_mem_memzero(context, sizeof(*context));
}

References context::buffer, d, memcpy(), memset(), p, REVERSE32, REVERSE64, SHA256_BLOCK_LENGTH, SHA256_DIGEST_LENGTH, SHA256_SHORT_BLOCK_LENGTH, SHA256_Transform(), and ut64().

Referenced by plugin_sha256_final(), plugin_sha256_small_block(), and SHA256_End().

SHA256_Init()

void SHA256_Init

(

RZ_SHA256_CTX *

context

)

Definition at line 285 of file sha2.c.

                                         {
    if (context == (RZ_SHA256_CTX *)0) {
        return;
    }
    memcpy(context->state, sha256_initial_hash_value, SHA256_DIGEST_LENGTH);
    rz_mem_memzero(context->buffer, SHA256_BLOCK_LENGTH);
    context->bitcount = 0;
}

References context::buffer, memcpy(), rz_mem_memzero(), SHA256_BLOCK_LENGTH, SHA256_DIGEST_LENGTH, and sha256_initial_hash_value.

Referenced by plugin_sha256_init(), plugin_sha256_small_block(), and SHA256_Data().

SHA256_Transform()

void SHA256_Transform	(	RZ_SHA256_CTX *	context,
		const ut32 *	data
	)

Definition at line 385 of file sha2.c.

                                                                {
    ut32 a, b, c, d, e, f, g, h, s0, s1;
    ut32 T1, T2, *W256;
    int j;
 
    W256 = (ut32 *)context->buffer;
 
    /* Initialize registers with the prev. intermediate value */
    a = context->state[0];
    b = context->state[1];
    c = context->state[2];
    d = context->state[3];
    e = context->state[4];
    f = context->state[5];
    g = context->state[6];
    h = context->state[7];
 
    j = 0;
    do {
#if BYTE_ORDER == LITTLE_ENDIAN
        /* Copy data while converting to host byte order */
        REVERSE32(*data++, W256[j]);
        /* Apply the SHA-256 compression function to update a..h */
        T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
#else /* BYTE_ORDER == LITTLE_ENDIAN */
        /* Apply the SHA-256 compression function to update a..h with copy */
        T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + (W256[j] = *data++);
#endif /* BYTE_ORDER == LITTLE_ENDIAN */
        T2 = Sigma0_256(a) + Maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + T1;
        d = c;
        c = b;
        b = a;
        a = T1 + T2;
 
        j++;
    } while (j < 16);
 
    do {
        /* Part of the message block expansion: */
        s0 = W256[(j + 1) & 0x0f];
        s0 = sigma0_256(s0);
        s1 = W256[(j + 14) & 0x0f];
        s1 = sigma1_256(s1);
 
        /* Apply the SHA-256 compression function to update a..h */
        T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
            (W256[j & 0x0f] += s1 + W256[(j + 9) & 0x0f] + s0);
        T2 = Sigma0_256(a) + Maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + T1;
        d = c;
        c = b;
        b = a;
        a = T1 + T2;
 
        j++;
    } while (j < 64);
 
    /* Compute the current intermediate hash value */
    context->state[0] += a;
    context->state[1] += b;
    context->state[2] += c;
    context->state[3] += d;
    context->state[4] += e;
    context->state[5] += f;
    context->state[6] += g;
    context->state[7] += h;
}

References a, b, context::buffer, BYTE_ORDER, c, Ch, d, e, f, g, h, K256, LITTLE_ENDIAN, Maj, REVERSE32, s0, s1, Sigma0_256, and Sigma1_256.

Referenced by SHA256_Final(), and SHA256_Update().

SHA256_Update()

void SHA256_Update	(	RZ_SHA256_CTX *	context,
		const ut8 *	data,
		size_t	len
	)

Definition at line 462 of file sha2.c.

                                                                        {
    unsigned int freespace, usedspace;
 
    /* Sanity check: */
    if (!context || !data || len == 0) {
        return;
    }
 
    usedspace = (context->bitcount >> 3) % SHA256_BLOCK_LENGTH;
    if (usedspace > 0) {
        /* Calculate how much free space is available in the buffer */
        freespace = SHA256_BLOCK_LENGTH - usedspace;
 
        if (len >= freespace) {
            /* Fill the buffer completely and process it */
            memcpy(&context->buffer[usedspace], data, freespace);
            context->bitcount += freespace << 3;
            len -= freespace;
            data += freespace;
            SHA256_Transform(context, (ut32 *)context->buffer);
        } else {
            /* The buffer is not yet full */
            memcpy(&context->buffer[usedspace], data, len);
            context->bitcount += len << 3;
            return;
        }
    }
    while (len >= SHA256_BLOCK_LENGTH) {
        /* Process as many complete blocks as we can */
        SHA256_Transform(context, (ut32 *)data);
        context->bitcount += SHA256_BLOCK_LENGTH << 3;
        len -= SHA256_BLOCK_LENGTH;
        data += SHA256_BLOCK_LENGTH;
    }
    if (len > 0) {
        /* There's left-overs, so save 'em */
        memcpy(context->buffer, data, len);
        context->bitcount += len << 3;
    }
}

References context::buffer, len, memcpy(), SHA256_BLOCK_LENGTH, and SHA256_Transform().

Referenced by plugin_sha256_small_block(), plugin_sha256_update(), and SHA256_Data().

SHA384_Data()

char* SHA384_Data	(	const ut8 *	data,
		size_t	len,
		char	digest[SHA384_DIGEST_STRING_LENGTH]
	)

Definition at line 1007 of file sha2.c.

                                                                                         {
    RZ_SHA384_CTX context;
    SHA384_Init(&context);
    SHA384_Update(&context, data, len);
    return SHA384_End(&context, digest);
}

References len, SHA384_End(), SHA384_Init(), and SHA384_Update().

SHA384_End()

char* SHA384_End	(	RZ_SHA384_CTX *	context,
		char	buffer[]
	)

Definition at line 982 of file sha2.c.

                                                        {
    ut8 digest[SHA384_DIGEST_LENGTH], *d = digest;
    int i;
 
    /* Sanity check: */
    if (!context) {
        return NULL;
    }
 
    if (buffer != (char *)0) {
        SHA384_Final(digest, context);
 
        for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
            *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
            *buffer++ = sha2_hex_digits[*d & 0x0f];
            d++;
        }
        *buffer = (char)0;
    } else {
        memset(context, 0, sizeof(*context));
    }
    memset(digest, 0, SHA384_DIGEST_LENGTH);
    return buffer;
}

References d, i, memset(), NULL, sha2_hex_digits, SHA384_DIGEST_LENGTH, and SHA384_Final().

Referenced by SHA384_Data().

SHA384_Final()

void SHA384_Final	(	ut8	digest[],
		RZ_SHA384_CTX *	context
	)

Definition at line 951 of file sha2.c.

                                                        {
    ut64 *d = (ut64 *)digest;
 
    /* Sanity check: */
    if (!context) {
        return;
    }
 
    /* If no digest buffer is passed, we don't bother doing this: */
    if (digest != (ut8 *)0) {
        SHA512_Last((RZ_SHA512_CTX *)context);
 
        /* Save the hash data for output: */
#if BYTE_ORDER == LITTLE_ENDIAN
        {
            /* Convert TO host byte order */
            int j;
            for (j = 0; j < 6; j++) {
                REVERSE64(context->state[j], context->state[j]);
                *d++ = context->state[j];
            }
        }
#else
        memcpy(d, context->state, SHA384_DIGEST_LENGTH);
#endif
    }
 
    /* Zero out state data */
    memset(context, 0, sizeof(*context));
}

References d, memcpy(), memset(), REVERSE64, SHA384_DIGEST_LENGTH, SHA512_Last(), and ut64().

Referenced by plugin_sha384_final(), plugin_sha384_small_block(), and SHA384_End().

SHA384_Init()

void SHA384_Init

(

RZ_SHA384_CTX *

context

)

Definition at line 938 of file sha2.c.

                                         {
    if (context == (RZ_SHA384_CTX *)0) {
        return;
    }
    memcpy(context->state, sha384_initial_hash_value, SHA512_DIGEST_LENGTH);
    memset(context->buffer, 0, SHA384_BLOCK_LENGTH);
    context->bitcount[0] = context->bitcount[1] = 0;
}

References context::buffer, memcpy(), memset(), SHA384_BLOCK_LENGTH, sha384_initial_hash_value, and SHA512_DIGEST_LENGTH.

Referenced by plugin_sha384_init(), plugin_sha384_small_block(), and SHA384_Data().

SHA384_Update()

void SHA384_Update	(	RZ_SHA384_CTX *	context,
		const ut8 *	data,
		size_t	len
	)

Definition at line 947 of file sha2.c.

                                                                        {
    SHA512_Update((RZ_SHA512_CTX *)context, data, len);
}

References len, and SHA512_Update().

Referenced by plugin_sha384_small_block(), plugin_sha384_update(), and SHA384_Data().

SHA512_Data()

char* SHA512_Data	(	const ut8 *	data,
		size_t	len,
		char	digest[SHA512_DIGEST_STRING_LENGTH]
	)

Definition at line 929 of file sha2.c.

                                                                                         {
    RZ_SHA512_CTX context;
 
    SHA512_Init(&context);
    SHA512_Update(&context, data, len);
    return SHA512_End(&context, digest);
}

References len, SHA512_End(), SHA512_Init(), and SHA512_Update().

SHA512_End()

char* SHA512_End	(	RZ_SHA512_CTX *	context,
		char	buffer[]
	)

Definition at line 904 of file sha2.c.

                                                        {
    ut8 digest[SHA512_DIGEST_LENGTH], *d = digest;
    int i;
 
    /* Sanity check: */
    if (!context) {
        return NULL;
    }
 
    if (buffer != (char *)0) {
        SHA512_Final(digest, context);
 
        for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
            *buffer++ = sha2_hex_digits[(*d & 0xf0) >> 4];
            *buffer++ = sha2_hex_digits[*d & 0x0f];
            d++;
        }
        *buffer = (char)0;
    } else {
        rz_mem_memzero(context, sizeof(*context));
    }
    rz_mem_memzero(digest, SHA512_DIGEST_LENGTH);
    return buffer;
}

References d, i, NULL, rz_mem_memzero(), sha2_hex_digits, SHA512_DIGEST_LENGTH, and SHA512_Final().

Referenced by SHA512_Data().

SHA512_Final()

void SHA512_Final	(	ut8	digest[],
		RZ_SHA512_CTX *	context
	)

Definition at line 873 of file sha2.c.

                                                        {
    ut64 *d = (ut64 *)digest;
 
    /* Sanity check: */
    if (!context) {
        return;
    }
 
    /* If no digest buffer is passed, we don't bother doing this: */
    if (digest != (ut8 *)0) {
        SHA512_Last(context);
 
        /* Save the hash data for output: */
#if BYTE_ORDER == LITTLE_ENDIAN
        {
            /* Convert TO host byte order */
            int j;
            for (j = 0; j < 8; j++) {
                REVERSE64(context->state[j], context->state[j]);
                *d++ = context->state[j];
            }
        }
#else
        memcpy(d, context->state, SHA512_DIGEST_LENGTH);
#endif
    }
 
    /* Zero out state data */
    rz_mem_memzero(context, sizeof(*context));
}

References d, memcpy(), REVERSE64, rz_mem_memzero(), SHA512_DIGEST_LENGTH, SHA512_Last(), and ut64().

Referenced by plugin_sha512_final(), plugin_sha512_small_block(), and SHA512_End().

SHA512_Init()

void SHA512_Init

(

RZ_SHA512_CTX *

context

)

Definition at line 606 of file sha2.c.

                                         {
    if (context == (RZ_SHA512_CTX *)0) {
        return;
    }
    memcpy(context->state, sha512_initial_hash_value, SHA512_DIGEST_LENGTH);
    rz_mem_memzero(context->buffer, SHA512_BLOCK_LENGTH);
    context->bitcount[0] = context->bitcount[1] = 0;
}

References context::buffer, memcpy(), rz_mem_memzero(), SHA512_BLOCK_LENGTH, SHA512_DIGEST_LENGTH, and sha512_initial_hash_value.

Referenced by plugin_sha512_init(), plugin_sha512_small_block(), and SHA512_Data().

SHA512_Last()

void SHA512_Last

(

RZ_SHA512_CTX *

context

)

Definition at line 823 of file sha2.c.

                                         {
    unsigned int usedspace;
 
    usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
#if BYTE_ORDER == LITTLE_ENDIAN
    /* Convert FROM host byte order */
    REVERSE64(context->bitcount[0], context->bitcount[0]);
    REVERSE64(context->bitcount[1], context->bitcount[1]);
#endif
    if (usedspace > 0) {
        /* Begin padding with a 1 bit: */
        context->buffer[usedspace++] = 0x80;
 
        if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) {
            /* Set-up for the last transform: */
            memset(&context->buffer[usedspace], 0, SHA512_SHORT_BLOCK_LENGTH - usedspace);
        } else {
            if (usedspace < SHA512_BLOCK_LENGTH) {
                memset(&context->buffer[usedspace], 0, SHA512_BLOCK_LENGTH - usedspace);
            }
            /* Do second-to-last transform: */
            SHA512_Transform(context, (ut64 *)context->buffer);
 
            /* And set-up for the last transform: */
            memset(context->buffer, 0, SHA512_BLOCK_LENGTH - 2);
        }
    } else {
        /* Prepare for final transform: */
        memset(context->buffer, 0, SHA512_SHORT_BLOCK_LENGTH);
 
        /* Begin padding with a 1 bit: */
        *context->buffer = 0x80;
    }
    /* Store the length of input data (in bits): */
#if WEAK_ALIASING
    *(ut64 *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
    *(ut64 *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH + 8] = context->bitcount[0];
#else
    {
        ut64 *p = (ut64 *)((ut8 *)context->buffer + SHA512_SHORT_BLOCK_LENGTH);
        *p = (ut64)context->bitcount[1];
        p = (ut64 *)((ut8 *)context->buffer + SHA512_SHORT_BLOCK_LENGTH + 8);
        *p = (ut64)context->bitcount[0];
    }
#endif
 
    /* Final transform: */
    SHA512_Transform(context, (ut64 *)context->buffer);
}

References context::buffer, memset(), p, REVERSE64, SHA512_BLOCK_LENGTH, SHA512_SHORT_BLOCK_LENGTH, SHA512_Transform(), and ut64().

Referenced by SHA384_Final(), and SHA512_Final().

SHA512_Transform()

void SHA512_Transform	(	RZ_SHA512_CTX *	context,
		const ut64 *	data
	)

Definition at line 702 of file sha2.c.

                                                                {
    ut64 a, b, c, d, e, f, g, h, s0, s1;
    ut64 T1, T2, *W512 = (ut64 *)context->buffer;
    int j;
 
    /* Initialize registers with the prev. intermediate value */
    a = context->state[0];
    b = context->state[1];
    c = context->state[2];
    d = context->state[3];
    e = context->state[4];
    f = context->state[5];
    g = context->state[6];
    h = context->state[7];
 
    j = 0;
    do {
#if BYTE_ORDER == LITTLE_ENDIAN
        /* Convert TO host byte order */
        REVERSE64(*data++, W512[j]);
        /* Apply the SHA-512 compression function to update a..h */
        T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
#else /* BYTE_ORDER == LITTLE_ENDIAN */
        /* Apply the SHA-512 compression function to update a..h with copy */
        T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + (W512[j] = *data++);
#endif /* BYTE_ORDER == LITTLE_ENDIAN */
        T2 = Sigma0_512(a) + Maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + T1;
        d = c;
        c = b;
        b = a;
        a = T1 + T2;
 
        j++;
    } while (j < 16);
 
    do {
        /* Part of the message block expansion: */
        s0 = W512[(j + 1) & 0x0f];
        s0 = sigma0_512(s0);
        s1 = W512[(j + 14) & 0x0f];
        s1 = sigma1_512(s1);
 
        /* Apply the SHA-512 compression function to update a..h */
        T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
            (W512[j & 0x0f] += s1 + W512[(j + 9) & 0x0f] + s0);
        T2 = Sigma0_512(a) + Maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + T1;
        d = c;
        c = b;
        b = a;
        a = T1 + T2;
 
        j++;
    } while (j < 80);
 
    /* Compute the current intermediate hash value */
    context->state[0] += a;
    context->state[1] += b;
    context->state[2] += c;
    context->state[3] += d;
    context->state[4] += e;
    context->state[5] += f;
    context->state[6] += g;
    context->state[7] += h;
}

References a, b, context::buffer, BYTE_ORDER, c, Ch, d, e, f, g, h, K512, LITTLE_ENDIAN, Maj, REVERSE64, s0, s1, Sigma0_512, Sigma1_512, and ut64().

Referenced by SHA512_Last(), and SHA512_Update().

SHA512_Update()

void SHA512_Update	(	RZ_SHA512_CTX *	context,
		const ut8 *	data,
		size_t	len
	)

Definition at line 777 of file sha2.c.

                                                                        {
    unsigned int freespace, usedspace;
 
    if (len == 0) {
        /* Calling with no data is valid - we do nothing */
        return;
    }
 
    /* Sanity check: */
    if (!context || !data) {
        return;
    }
 
    usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
    if (usedspace > 0) {
        /* Calculate how much free space is available in the buffer */
        freespace = SHA512_BLOCK_LENGTH - usedspace;
 
        if (len >= freespace) {
            /* Fill the buffer completely and process it */
            memcpy(&context->buffer[usedspace], data, freespace);
            ADDINC128(context->bitcount, freespace << 3);
            len -= freespace;
            data += freespace;
            SHA512_Transform(context, (ut64 *)context->buffer);
        } else {
            /* The buffer is not yet full */
            memcpy(&context->buffer[usedspace], data, len);
            ADDINC128(context->bitcount, len << 3);
            return;
        }
    }
    while (len >= SHA512_BLOCK_LENGTH) {
        /* Process as many complete blocks as we can */
        SHA512_Transform(context, (ut64 *)data);
        ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
        len -= SHA512_BLOCK_LENGTH;
        data += SHA512_BLOCK_LENGTH;
    }
    if (len > 0) {
        /* There's left-overs, so save 'em */
        memcpy(context->buffer, data, len);
        ADDINC128(context->bitcount, len << 3);
    }
}

References ADDINC128, context::buffer, len, memcpy(), SHA512_BLOCK_LENGTH, SHA512_Transform(), and ut64().

Referenced by plugin_sha512_small_block(), plugin_sha512_update(), SHA384_Update(), and SHA512_Data().

Variable Documentation

K256

const ut32 K256[64]

static

Initial value:

= {
    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
}

Definition at line 179 of file sha2.c.

Referenced by SHA256_Transform().

K512

const ut64 K512[80]

static

Definition at line 211 of file sha2.c.

Referenced by SHA512_Transform().

sha256_initial_hash_value

const ut32 sha256_initial_hash_value[8]

static

Initial value:

= {
    0x6a09e667UL,
    0xbb67ae85UL,
    0x3c6ef372UL,
    0xa54ff53aUL,
    0x510e527fUL,
    0x9b05688cUL,
    0x1f83d9abUL,
    0x5be0cd19UL
}

Definition at line 199 of file sha2.c.

Referenced by SHA256_Init().

sha2_hex_digits

const char* sha2_hex_digits = "0123456789abcdef"

static

Definition at line 282 of file sha2.c.

Referenced by SHA256_End(), SHA384_End(), and SHA512_End().

sha384_initial_hash_value

const ut64 sha384_initial_hash_value[8]

static

Initial value:

= {
    0xcbbb9d5dc1059ed8ULL,
    0x629a292a367cd507ULL,
    0x9159015a3070dd17ULL,
    0x152fecd8f70e5939ULL,
    0x67332667ffc00b31ULL,
    0x8eb44a8768581511ULL,
    0xdb0c2e0d64f98fa7ULL,
    0x47b5481dbefa4fa4ULL
}

Definition at line 255 of file sha2.c.

Referenced by SHA384_Init().

sha512_initial_hash_value

const ut64 sha512_initial_hash_value[8]

static

Initial value:

= {
    0x6a09e667f3bcc908ULL,
    0xbb67ae8584caa73bULL,
    0x3c6ef372fe94f82bULL,
    0xa54ff53a5f1d36f1ULL,
    0x510e527fade682d1ULL,
    0x9b05688c2b3e6c1fULL,
    0x1f83d9abfb41bd6bULL,
    0x5be0cd19137e2179ULL
}

Definition at line 267 of file sha2.c.

Referenced by SHA512_Init().