diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/ocsp/ocsp_ext.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/crypto/ocsp/ocsp_ext.c b/crypto/ocsp/ocsp_ext.c index d6c8899f58..57399433fc 100644 --- a/crypto/ocsp/ocsp_ext.c +++ b/crypto/ocsp/ocsp_ext.c @@ -305,6 +305,8 @@ err: /* Add a nonce to an extension stack. A nonce can be specificed or if NULL * a random nonce will be generated. + * Note: OpenSSL 0.9.7d and later create an OCTET STRING containing the + * nonce, previous versions used the raw nonce. */ static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, int len) @@ -313,20 +315,28 @@ static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, ASN1_OCTET_STRING os; int ret = 0; if (len <= 0) len = OCSP_DEFAULT_NONCE_LENGTH; - if (val) tmpval = val; + /* Create the OCTET STRING manually by writing out the header and + * appending the content octets. This avoids an extra memory allocation + * operation in some cases. Applications should *NOT* do this because + * it relies on library internals. + */ + os.length = ASN1_object_size(0, len, V_ASN1_OCTET_STRING); + os.data = OPENSSL_malloc(os.length); + if (os.data == NULL) + goto err; + tmpval = os.data; + ASN1_put_object(&tmpval, 0, len, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL); + if (val) + memcpy(tmpval, val, len); else - { - if (!(tmpval = OPENSSL_malloc(len))) goto err; RAND_pseudo_bytes(tmpval, len); - } - os.data = tmpval; - os.length = len; if(!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce, &os, 0, X509V3_ADD_REPLACE)) goto err; ret = 1; err: - if(!val) OPENSSL_free(tmpval); + if (os.data) + OPENSSL_free(os.data); return ret; } |