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Diffstat (limited to 'src/libsimaka/simaka_message.c')
-rw-r--r--src/libsimaka/simaka_message.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/libsimaka/simaka_message.c b/src/libsimaka/simaka_message.c
index e0319e918..3a8f4beaf 100644
--- a/src/libsimaka/simaka_message.c
+++ b/src/libsimaka/simaka_message.c
@@ -741,6 +741,7 @@ static eap_payload_t* generate(private_simaka_message_t *this, chunk_t sigdata)
crypter = this->crypto->get_crypter(this->crypto);
bs = crypter->get_block_size(crypter);
+ iv.len = crypter->get_iv_size(crypter);
/* add AT_PADDING attribute */
padding = bs - ((sizeof(encr_buf) - encr.len) % bs);
@@ -757,15 +758,15 @@ static eap_payload_t* generate(private_simaka_message_t *this, chunk_t sigdata)
/* add IV attribute */
hdr = (attr_hdr_t*)out.ptr;
hdr->type = AT_IV;
- hdr->length = bs / 4 + 1;
+ hdr->length = iv.len / 4 + 1;
memset(out.ptr + 2, 0, 2);
out = chunk_skip(out, 4);
rng = this->crypto->get_rng(this->crypto);
- rng->get_bytes(rng, bs, out.ptr);
+ rng->get_bytes(rng, iv.len, out.ptr);
- iv = chunk_clonea(chunk_create(out.ptr, bs));
- out = chunk_skip(out, bs);
+ iv = chunk_clonea(chunk_create(out.ptr, iv.len));
+ out = chunk_skip(out, iv.len);
/* inline encryption */
crypter->encrypt(crypter, encr, iv, NULL);