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iv length is constant so set only once #649

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merged 1 commit into from
May 3, 2023
Merged

iv length is constant so set only once #649

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8 changes: 4 additions & 4 deletions crypto/cipher/aes_gcm_ossl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -199,6 +199,10 @@ static srtp_err_status_t srtp_aes_gcm_openssl_context_init(void *cv,
return (srtp_err_status_init_fail);
}

if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) {
return (srtp_err_status_init_fail);
}

return (srtp_err_status_ok);
}

Expand All @@ -222,10 +226,6 @@ static srtp_err_status_t srtp_aes_gcm_openssl_set_iv(
debug_print(srtp_mod_aes_gcm, "setting iv: %s",
srtp_octet_string_hex_string(iv, 12));

if (!EVP_CIPHER_CTX_ctrl(c->ctx, EVP_CTRL_GCM_SET_IVLEN, 12, 0)) {
return (srtp_err_status_init_fail);
}

if (!EVP_CipherInit_ex(c->ctx, NULL, NULL, NULL, iv,
(c->dir == srtp_direction_encrypt ? 1 : 0))) {
return (srtp_err_status_init_fail);
Expand Down