![]() ![]() There are two different key lengths shown - for 128 bit keys and 192 bit keys respectively. These ciphers are all variants of the AES (Advanced Encryption Standard) algorithm. Refer to the evp.h header file for the complete list of ciphers and message digests.Īn extract from evp.h listing some EVP_CIPHER functions is shown below: You are not expected to create these yourself, but instead use one of the built in functions to return one for the particular algorithm that you wish to use. ![]() Working with Algorithms and Modes Ĭiphers and Message Digest algorithms are identified by a unique EVP_CIPHER and EVP_MD object respectively. Refer to EVP Key and Parameter Generation for information on generating new keys and associated parameters. Refer to the Manual:EVP_PKEY_new(3) manual page for information on creating an EVP_PKEY object, and the Manual:EVP_PKEY_set1_RSA(3) page for information on how to initialise an EVP_PKEY. For details, see DSA with OpenSSL-1.1 on the mailing list. Note: DSA handling changed for SSL/TLS cipher suites in OpenSSL 1.1.0. EVP_PKEY_CMAC: A CMAC key for generating a Message Authentication Code.EVP_PKEY_HMAC: An HMAC key for generating a Message Authentication Code.EVP_PKEY_DH: Diffie Hellman - for key derivation.EVP_PKEY_RSA: RSA - Supports sign/verify and encrypt/decrypt.EVP_PKEY_EC: Elliptic Curve keys (for ECDSA and ECDH) - Supports sign/verify operations, and Key derivation.The following EVP_PKEY types are supported: They are also capable of storing symmetric MAC keys. EVP_PKEY objects are used to store a public key and (optionally) a private key, along with an associated algorithm and parameters. ![]()
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