diff options
Diffstat (limited to 'cipher/md4.c')
| -rw-r--r-- | cipher/md4.c | 123 |
1 files changed, 26 insertions, 97 deletions
diff --git a/cipher/md4.c b/cipher/md4.c index 7bb31a8e..0135e345 100644 --- a/cipher/md4.c +++ b/cipher/md4.c @@ -54,7 +54,7 @@ #include <assert.h> #include "g10lib.h" #include "memory.h" -#include "dynload.h" +#include "cipher.h" #include "bithelp.h" @@ -68,15 +68,17 @@ typedef struct { static void -md4_init( MD4_CONTEXT *ctx ) +md4_init( void *context ) { - ctx->A = 0x67452301; - ctx->B = 0xefcdab89; - ctx->C = 0x98badcfe; - ctx->D = 0x10325476; + MD4_CONTEXT *ctx = (MD4_CONTEXT *) context; - ctx->nblocks = 0; - ctx->count = 0; + ctx->A = 0x67452301; + ctx->B = 0xefcdab89; + ctx->C = 0x98badcfe; + ctx->D = 0x10325476; + + ctx->nblocks = 0; + ctx->count = 0; } #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) @@ -188,8 +190,9 @@ transform( MD4_CONTEXT *ctx, byte *data ) * in the message whose digest is being computed. */ static void -md4_write( MD4_CONTEXT *hd, byte *inbuf, size_t inlen) +md4_write( void *context, byte *inbuf, size_t inlen) { + MD4_CONTEXT *hd = (MD4_CONTEXT *) context; if( hd->count == 64 ) { /* flush the buffer */ transform( hd, hd->buf ); _gcry_burn_stack (80+6*sizeof(void*)); @@ -228,8 +231,9 @@ md4_write( MD4_CONTEXT *hd, byte *inbuf, size_t inlen) */ static void -md4_final( MD4_CONTEXT *hd ) +md4_final( void *context ) { + MD4_CONTEXT *hd = (MD4_CONTEXT *) context; u32 t, msb, lsb; byte *p; @@ -289,96 +293,21 @@ md4_final( MD4_CONTEXT *hd ) } static byte * -md4_read( MD4_CONTEXT *hd ) -{ - 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 * -md4_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[18] = /* Object ID is 1.2.840.113549.2.4 */ - { 0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86,0x48, - 0x86, 0xf7, 0x0d, 0x02, 0x04, 0x05, 0x00, 0x04, 0x10 }; - - if( algo != 301 ) - return NULL; - - *contextsize = sizeof(MD4_CONTEXT); - *r_asnoid = asn; - *r_asnlen = DIM(asn); - *r_mdlen = 16; - *(void (**)(MD4_CONTEXT *))r_init = md4_init; - *(void (**)(MD4_CONTEXT *, byte*, size_t))r_write = md4_write; - *(void (**)(MD4_CONTEXT *))r_final = md4_final; - *(byte *(**)(MD4_CONTEXT *))r_read = md4_read; - - return "MD4"; -} - - -#ifndef IS_MODULE -static -#endif -const char * const gnupgext_version = "MD4 ($Revision$)"; - -static struct { - int class; - int version; - int value; - void (*func)(void); -} func_table[] = { - { 10, 1, 0, (void(*)(void))md4_get_info }, - { 11, 1, 301 }, -}; - - -#ifndef IS_MODULE -static -#endif -void * -gnupgext_enum_func( int what, int *sequence, int *class, int *vers ) +md4_read (void *context) { - 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; + MD4_CONTEXT *hd = (MD4_CONTEXT *) context; + return hd->buf; } +static byte asn[18] = /* Object ID is 1.2.840.113549.2.4 */ + { 0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86,0x48, + 0x86, 0xf7, 0x0d, 0x02, 0x04, 0x05, 0x00, 0x04, 0x10 }; - - -#ifndef IS_MODULE -void -_gcry_md4_constructor(void) -{ - _gcry_register_internal_cipher_extension( gnupgext_version, gnupgext_enum_func ); -} -#endif +GcryDigestSpec digest_spec_md4 = + { + "MD4", GCRY_MD_MD4, asn, DIM (asn), 16, + md4_init, md4_write, md4_final, md4_read, + sizeof (MD4_CONTEXT) + }; /* end of file */ |