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Include a local static buffer for the SHA helper functions

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This functionality existed in 1.1.1 but was lost.

Fixes #15718

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15752)
This commit is contained in:
Pauli 2021-06-15 18:48:35 +10:00
parent f763e13514
commit 987d7da327
1 changed files with 20 additions and 0 deletions
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20
crypto/sha/sha1_one.c
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@ -37,25 +37,45 @@ unsigned char *ossl_sha1(const unsigned char *d, size_t n, unsigned char *md)
unsigned char *SHA1(const unsigned char *d, size_t n, unsigned char *md)
{
static unsigned char m[SHA_DIGEST_LENGTH];
if (md == NULL)
md = m;
return EVP_Q_digest(NULL, "SHA1", NULL, d, n, md, NULL) ? md : NULL;
}
unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md)
{
static unsigned char m[SHA224_DIGEST_LENGTH];
if (md == NULL)
md = m;
return EVP_Q_digest(NULL, "SHA224", NULL, d, n, md, NULL) ? md : NULL;
}
unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md)
{
static unsigned char m[SHA256_DIGEST_LENGTH];
if (md == NULL)
md = m;
return EVP_Q_digest(NULL, "SHA256", NULL, d, n, md, NULL) ? md : NULL;
}
unsigned char *SHA384(const unsigned char *d, size_t n, unsigned char *md)
{
static unsigned char m[SHA384_DIGEST_LENGTH];
if (md == NULL)
md = m;
return EVP_Q_digest(NULL, "SHA384", NULL, d, n, md, NULL) ? md : NULL;
}
unsigned char *SHA512(const unsigned char *d, size_t n, unsigned char *md)
{
static unsigned char m[SHA512_DIGEST_LENGTH];
if (md == NULL)
md = m;
return EVP_Q_digest(NULL, "SHA512", NULL, d, n, md, NULL) ? md : NULL;
}