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Reject inappropriate private key encryption ciphers. 

The traditional private key encryption algorithm doesn't function
properly if the IV length of the cipher is zero. These ciphers
(e.g. ECB mode) are not suitable for private key encryption
anyway.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2016-04-23 13:33:05 +01:00
parent 4a397f5168
commit d78df5dfd6
1 changed files with 1 additions and 1 deletions
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2
crypto/pem/pem_lib.c
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@ -344,7 +344,7 @@ int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
if (enc != NULL) {
objstr = OBJ_nid2sn(EVP_CIPHER_nid(enc));
if (objstr == NULL) {
if (objstr == NULL || EVP_CIPHER_iv_length(enc) == 0) {
PEMerr(PEM_F_PEM_ASN1_WRITE_BIO, PEM_R_UNSUPPORTED_CIPHER);
goto err;
}