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JSSE: Cipher filtering based on protocols #318

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Merged
cconlon merged 1 commit into from
Feb 5, 2026
Merged

JSSE: Cipher filtering based on protocols #318

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11 changes: 11 additions & 0 deletions native/com_wolfssl_WolfSSL.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2029,6 +2029,7 @@ JNIEXPORT jstring JNICALL Java_com_wolfssl_WolfSSL_getAvailableCipherSuitesIana
byte cipherSuite0;
byte cipherSuite;
#endif
long noOpts = 0;
const char* cipherName = NULL;
const char* ianaName = NULL;
WOLFSSL_METHOD* method = NULL;
Expand Down Expand Up @@ -2067,11 +2068,16 @@ JNIEXPORT jstring JNICALL Java_com_wolfssl_WolfSSL_getAvailableCipherSuitesIana
#ifndef WOLFSSL_NO_TLS12
case 3:
method = wolfTLSv1_2_client_method();
noOpts = SSL_OP_NO_TLSv1_3;
break;
#endif
#ifdef WOLFSSL_TLS13
case 4:
method = wolfTLSv1_3_client_method();
noOpts = SSL_OP_NO_SSLv3 |
SSL_OP_NO_TLSv1 |
SSL_OP_NO_TLSv1_1 |
SSL_OP_NO_TLSv1_2;
break;
#endif
case 5:
Expand Down Expand Up @@ -2112,6 +2118,11 @@ JNIEXPORT jstring JNICALL Java_com_wolfssl_WolfSSL_getAvailableCipherSuitesIana
return NULL;
}

/* Filter cipher suites to only target protocol version */
if (noOpts != 0) {
wolfSSL_set_options(ssl, noOpts);
}

supportedCiphers = wolfSSL_get_ciphers_compat(ssl);
if (supportedCiphers == NULL) {
wolfSSL_free(ssl);
Expand Down
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