diff options
Diffstat (limited to 'src/libstrongswan/plugins/openssl/openssl_util.c')
| -rw-r--r-- | src/libstrongswan/plugins/openssl/openssl_util.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/libstrongswan/plugins/openssl/openssl_util.c b/src/libstrongswan/plugins/openssl/openssl_util.c index bb0c296e1..c8c453f64 100644 --- a/src/libstrongswan/plugins/openssl/openssl_util.c +++ b/src/libstrongswan/plugins/openssl/openssl_util.c @@ -71,21 +71,26 @@ bool openssl_bn_cat(int len, BIGNUM *a, BIGNUM *b, chunk_t *chunk) { int offset; - chunk->len = len * 2; + chunk->len = len + (b ? len : 0); chunk->ptr = malloc(chunk->len); memset(chunk->ptr, 0, chunk->len); + /* convert a */ offset = len - BN_num_bytes(a); if (!BN_bn2bin(a, chunk->ptr + offset)) { goto error; } - offset = len - BN_num_bytes(b); - if (!BN_bn2bin(b, chunk->ptr + len + offset)) + /* optionally convert and concatenate b */ + if (b) { - goto error; - } + offset = len - BN_num_bytes(b); + if (!BN_bn2bin(b, chunk->ptr + len + offset)) + { + goto error; + } + } return TRUE; error: |