int
md5_finish (md5_t *ctx, void *digest, unsigned int digestlen)
{
uint8_t buf[MD5_DIGEST_LENGTH];
if (ctx == NULL || ctx->magic != MD5_MAGIC
|| digest == NULL || digestlen < MD5_DIGEST_LENGTH)
{
errno = EINVAL;
return (-1);
}
_md5_append_padding_and_length (ctx);
/* Note there are no endian issues here, compiler is required to
* handle bitmasks and shifts correctly
*/
buf[0] = (A & 0x000000ff);
buf[1] = (A & 0x0000ff00) >> 8;
buf[2] = (A & 0x00ff0000) >> 16;
buf[3] = (A & 0xff000000) >> 24;
buf[4] = (B & 0x000000ff);
buf[5] = (B & 0x0000ff00) >> 8;
buf[6] = (B & 0x00ff0000) >> 16;
buf[7] = (B & 0xff000000) >> 24;
buf[8] = (C & 0x000000ff);
buf[9] = (C & 0x0000ff00) >> 8;
buf[10] = (C & 0x00ff0000) >> 16;
buf[11] = (C & 0xff000000) >> 24;
buf[12] = (D & 0x000000ff);
buf[13] = (D & 0x0000ff00) >> 8;
buf[14] = (D & 0x00ff0000) >> 16;
buf[15] = (D & 0xff000000) >> 24;
memcpy (digest, buf, MD5_DIGEST_LENGTH);
ctx->magic = ~MD5_MAGIC;
return (MD5_DIGEST_LENGTH);
}
int
md5_finish(md5_t *ctx, uint8_t *digest, unsigned int digestlen)
{
if (ctx == NULL || ctx->magic != MD5_MAGIC
|| digest == NULL || digestlen < MD5_DIGEST_LENGTH)
{
errno = EINVAL;
return -1;
}
_md5_append_padding_and_length(ctx);
/* Note there are no endian issues here, compiler is required to
* handle bitmasks and shifts correctly
*/
digest[0] = (A & 0x000000ff);
digest[1] = (A & 0x0000ff00) >> 8;
digest[2] = (A & 0x00ff0000) >> 16;
digest[3] = (A & 0xff000000) >> 24;
digest[4] = (B & 0x000000ff);
digest[5] = (B & 0x0000ff00) >> 8;
digest[6] = (B & 0x00ff0000) >> 16;
digest[7] = (B & 0xff000000) >> 24;
digest[8] = (C & 0x000000ff);
digest[9] = (C & 0x0000ff00) >> 8;
digest[10] = (C & 0x00ff0000) >> 16;
digest[11] = (C & 0xff000000) >> 24;
digest[12] = (D & 0x000000ff);
digest[13] = (D & 0x0000ff00) >> 8;
digest[14] = (D & 0x00ff0000) >> 16;
digest[15] = (D & 0xff000000) >> 24;
ctx->magic = ~MD5_MAGIC;
return MD5_DIGEST_LENGTH;
}
