Function

SSLGetDiffieHellmanParams

Retrieves the Diffie-Hellman parameters for a given context.

Declaration

OSStatus SSLGetDiffieHellmanParams(SSLContextRef context, const void * _Nullable *dhParams, size_t *dhParamsLen);

Parameters

context

An SSL session context reference.

dhParams

On return, points to a buffer containing the Diffie-Hellman parameter block in Open SSL DER format.The returned data is not copied and belongs to the SSL session context reference; therefore, you cannot modify the data and it is released automatically when you dispose of the context.

dhParamsLen

On return, points to the length of the buffer pointed to by the dhParams parameter.

Return Value

A result code. See Secure Transport Result Codes.

Discussion

This function returns the parameter block specified in an earlier call to the SSLSetDiffieHellmanParams function. If that function was never called, the dhParams parameter returns NULL and the dhParamsLen parameter returns 0.

See Also

Ciphers

SSLGetNumberSupportedCiphers

Determines the number of cipher suites supported.

Deprecated
SSLGetSupportedCiphers

Determines the values of the supported cipher suites.

Deprecated
SSLSetEnabledCiphers

Specifies a restricted set of SSL cipher suites to be enabled by the current SSL session context.

Deprecated
SSLGetNumberEnabledCiphers

Determines the number of cipher suites currently enabled.

Deprecated
SSLGetEnabledCiphers

Determines which SSL cipher suites are currently enabled.

Deprecated
SSLGetNegotiatedCipher

Retrieves the cipher suite negotiated for this session.

Deprecated
SSLSetDiffieHellmanParams

Specifies Diffie-Hellman parameters for a given context.

Deprecated
tls_ciphersuite_group_t

Groups that collect ciphersuites of comparable security properties.

Beta
tls_ciphersuite_t

The collection of valid ciphersuites.

Beta
SSLCipherSuite

A type for storing cipher suite values.

SSLCiphersuiteGroup

A mechanism for grouping related cipher suites.

SSL Cipher Suite Values

Recognize the set of valid SSL cipher suite values.