diff options
Diffstat (limited to 'cipher/sha256.c')
| -rw-r--r-- | cipher/sha256.c | 113 |
1 files changed, 17 insertions, 96 deletions
diff --git a/cipher/sha256.c b/cipher/sha256.c index 1aafd334..260ecd76 100644 --- a/cipher/sha256.c +++ b/cipher/sha256.c @@ -40,9 +40,8 @@ #include <assert.h> #include "g10lib.h" #include "memory.h" -#include "dynload.h" #include "bithelp.h" - +#include "cipher.h" typedef struct { u32 h0,h1,h2,h3,h4,h5,h6,h7; @@ -53,8 +52,10 @@ typedef struct { static void -sha256_init (SHA256_CONTEXT *hd) +sha256_init (void *context) { + SHA256_CONTEXT *hd = (SHA256_CONTEXT *) context; + hd->h0 = 0x6a09e667; hd->h1 = 0xbb67ae85; hd->h2 = 0x3c6ef372; @@ -173,8 +174,9 @@ transform (SHA256_CONTEXT *hd, byte *data) /* Update the message digest with the contents of INBUF with length INLEN. */ static void -sha256_write (SHA256_CONTEXT *hd, byte *inbuf, size_t inlen) +sha256_write (void *context, byte *inbuf, size_t inlen) { + SHA256_CONTEXT *hd = (SHA256_CONTEXT *) context; if (hd->count == 64) { /* flush the buffer */ transform (hd, hd->buf); @@ -213,8 +215,9 @@ sha256_write (SHA256_CONTEXT *hd, byte *inbuf, size_t inlen) to the handle will the destroy the returned buffer. Returns: 32 bytes with the message the digest. */ static void -sha256_final(SHA256_CONTEXT *hd) +sha256_final(void *context) { + SHA256_CONTEXT *hd = (SHA256_CONTEXT *) context; u32 t, msb, lsb; byte *p; @@ -279,102 +282,20 @@ sha256_final(SHA256_CONTEXT *hd) } static byte * -sha256_read (SHA256_CONTEXT *hd) +sha256_read (void *context) { + SHA256_CONTEXT *hd = (SHA256_CONTEXT *) context; return hd->buf; } -/* - Return some information about the algorithm. We need algo here to - distinguish different flavors of the algorithm. Returns: A pointer - to string describing the algorithm or NULL if the ALGO is invalid. */ -static const char * -sha256_get_info (int algo, size_t *contextsize, - byte **r_asnoid, int *r_asnlen, int *r_mdlen, - void (**r_init)( void *c ), - void (**r_write)( void *c, byte *buf, size_t nbytes ), - void (**r_final)( void *c ), - byte *(**r_read)( void *c ) - ) -{ - static byte asn[19] = /* Object ID is 2.16.840.1.101.3.4.2.1 */ +static byte asn[19] = /* Object ID is 2.16.840.1.101.3.4.2.1 */ { 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20 }; - if(algo != 8) - return NULL; - - *contextsize = sizeof(SHA256_CONTEXT); - *r_asnoid = asn; - *r_asnlen = DIM(asn); - *r_mdlen = 32; - *(void (**)(SHA256_CONTEXT *))r_init = sha256_init; - *(void (**)(SHA256_CONTEXT *, byte*, size_t))r_write = sha256_write; - *(void (**)(SHA256_CONTEXT *))r_final = sha256_final; - *(byte *(**)(SHA256_CONTEXT *))r_read = sha256_read; - - return "SHA256"; -} - - - -#ifndef IS_MODULE -static -#endif -const char * const gnupgext_version = "SHA256 ($Revision$)"; - -static struct { - int class; - int version; - int value; - void (*func)(void); -} func_table[] = { - { 10, 1, 0, (void(*)(void))sha256_get_info }, - { 11, 1, 8 }, -}; - - -#ifndef IS_MODULE -static -#endif -void * -gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) -{ - void *ret; - int i = *sequence; - - do { - if( i >= DIM(func_table) || i < 0 ) { - return NULL; - } - *class = func_table[i].class; - *vers = func_table[i].version; - switch( *class ) { - case 11: - case 21: - case 31: - ret = &func_table[i].value; - break; - default: - ret = func_table[i].func; - break; - } - i++; - } while( what && what != *class ); - - *sequence = i; - return ret; -} - - - - -#ifndef IS_MODULE -void -_gcry_sha256_constructor(void) -{ - _gcry_register_internal_cipher_extension (gnupgext_version, - gnupgext_enum_func ); -} -#endif +GcryDigestSpec digest_spec_sha256 = + { + "SHA256", GCRY_MD_SHA256, asn, DIM (asn), 32, + sha256_init, sha256_write, sha256_final, sha256_read, + sizeof (SHA256_CONTEXT) + }; |