diff options
Diffstat (limited to 'lib/sha512.c')
| -rw-r--r-- | lib/sha512.c | 116 |
1 files changed, 3 insertions, 113 deletions
diff --git a/lib/sha512.c b/lib/sha512.c index a3533209c6..2865d6e588 100644 --- a/lib/sha512.c +++ b/lib/sha512.c @@ -22,6 +22,7 @@ #include <config.h> +/* Specification. */ #if HAVE_OPENSSL_SHA512 # define GL_OPENSSL_INLINE _GL_EXTERN_INLINE #endif @@ -29,13 +30,8 @@ #include <stdalign.h> #include <stdint.h> -#include <stdlib.h> #include <string.h> -#if USE_UNLOCKED_IO -# include "unlocked-io.h" -#endif - #include <byteswap.h> #ifdef WORDS_BIGENDIAN # define SWAP(n) (n) @@ -43,12 +39,8 @@ # define SWAP(n) bswap_64 (n) #endif -#define BLOCKSIZE 32768 -#if BLOCKSIZE % 128 != 0 -# error "invalid BLOCKSIZE" -#endif - #if ! HAVE_OPENSSL_SHA512 + /* This array contains the bytes used to pad the buffer to the next 128-byte boundary. */ static const unsigned char fillbuf[128] = { 0x80, 0 /* , 0, 0, ... */ }; @@ -168,110 +160,7 @@ sha384_finish_ctx (struct sha512_ctx *ctx, void *resbuf) sha512_conclude_ctx (ctx); return sha384_read_ctx (ctx, resbuf); } -#endif - -#ifdef GL_COMPILE_CRYPTO_STREAM - -#include "af_alg.h" - -/* Compute message digest for bytes read from STREAM using algorithm ALG. - Write the message digest into RESBLOCK, which contains HASHLEN bytes. - The initial and finishing operations are INIT_CTX and FINISH_CTX. - Return zero if and only if successful. */ -static int -shaxxx_stream (FILE *stream, char const *alg, void *resblock, - ssize_t hashlen, void (*init_ctx) (struct sha512_ctx *), - void *(*finish_ctx) (struct sha512_ctx *, void *)) -{ - switch (afalg_stream (stream, alg, resblock, hashlen)) - { - case 0: return 0; - case -EIO: return 1; - } - - char *buffer = malloc (BLOCKSIZE + 72); - if (!buffer) - return 1; - - struct sha512_ctx ctx; - init_ctx (&ctx); - size_t sum; - - /* Iterate over full file contents. */ - while (1) - { - /* We read the file in blocks of BLOCKSIZE bytes. One call of the - computation function processes the whole buffer so that with the - next round of the loop another block can be read. */ - size_t n; - sum = 0; - - /* Read block. Take care for partial reads. */ - while (1) - { - /* Either process a partial fread() from this loop, - or the fread() in afalg_stream may have gotten EOF. - We need to avoid a subsequent fread() as EOF may - not be sticky. For details of such systems, see: - https://sourceware.org/bugzilla/show_bug.cgi?id=1190 */ - if (feof (stream)) - goto process_partial_block; - - n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream); - - sum += n; - - if (sum == BLOCKSIZE) - break; - - if (n == 0) - { - /* Check for the error flag IFF N == 0, so that we don't - exit the loop after a partial read due to e.g., EAGAIN - or EWOULDBLOCK. */ - if (ferror (stream)) - { - free (buffer); - return 1; - } - goto process_partial_block; - } - } - - /* Process buffer with BLOCKSIZE bytes. Note that - BLOCKSIZE % 128 == 0 - */ - sha512_process_block (buffer, BLOCKSIZE, &ctx); - } - - process_partial_block:; - - /* Process any remaining bytes. */ - if (sum > 0) - sha512_process_bytes (buffer, sum, &ctx); - - /* Construct result in desired memory. */ - finish_ctx (&ctx, resblock); - free (buffer); - return 0; -} -int -sha512_stream (FILE *stream, void *resblock) -{ - return shaxxx_stream (stream, "sha512", resblock, SHA512_DIGEST_SIZE, - sha512_init_ctx, sha512_finish_ctx); -} - -int -sha384_stream (FILE *stream, void *resblock) -{ - return shaxxx_stream (stream, "sha384", resblock, SHA384_DIGEST_SIZE, - sha384_init_ctx, sha384_finish_ctx); -} -#endif - -#if ! HAVE_OPENSSL_SHA512 /* Compute SHA512 message digest for LEN bytes beginning at BUFFER. The result is always in little endian byte order, so that a byte-wise output yields to the wanted ASCII representation of the message @@ -578,6 +467,7 @@ sha512_process_block (const void *buffer, size_t len, struct sha512_ctx *ctx) h = ctx->state[7] = u64plus (ctx->state[7], h); } } + #endif /* |