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EVP_rc2_cbc.3ossl - Man Page

EVP RC2 cipher


 #include <openssl/evp.h>

 const EVP_CIPHER *EVP_rc2_cbc(void);
 const EVP_CIPHER *EVP_rc2_cfb(void);
 const EVP_CIPHER *EVP_rc2_cfb64(void);
 const EVP_CIPHER *EVP_rc2_ecb(void);
 const EVP_CIPHER *EVP_rc2_ofb(void);
 const EVP_CIPHER *EVP_rc2_40_cbc(void);
 const EVP_CIPHER *EVP_rc2_64_cbc(void);


The RC2 encryption algorithm for EVP.

EVP_rc2_cbc(),  EVP_rc2_cfb(),  EVP_rc2_cfb64(),  EVP_rc2_ecb(),  EVP_rc2_ofb()

RC2 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a variable key length cipher with an additional parameter called "effective key bits" or "effective key length". By default both are set to 128 bits.

EVP_rc2_40_cbc(),  EVP_rc2_64_cbc()

RC2 algorithm in CBC mode with a default key length and effective key length of 40 and 64 bits.

WARNING: these functions are obsolete. Their usage should be replaced with the EVP_rc2_cbc(), EVP_CIPHER_CTX_set_key_length() and EVP_CIPHER_CTX_ctrl() functions to set the key length and effective key length.


Developers should be aware of the negative performance implications of calling these functions multiple times and should consider using EVP_CIPHER_fetch(3) with EVP_CIPHER-RC2(7) instead. See "Performance" in crypto(7) for further information.

Return Values

These functions return an EVP_CIPHER structure that contains the implementation of the symmetric cipher. See EVP_CIPHER_meth_new(3) for details of the EVP_CIPHER structure.

See Also

evp(7), EVP_EncryptInit(3), EVP_CIPHER_meth_new(3)

Referenced By


The man pages EVP_rc2_40_cbc.3ossl(3), EVP_rc2_64_cbc.3ossl(3), EVP_rc2_cfb.3ossl(3), EVP_rc2_cfb64.3ossl(3), EVP_rc2_ecb.3ossl(3) and EVP_rc2_ofb.3ossl(3) are aliases of EVP_rc2_cbc.3ossl(3).

2024-07-09 3.2.2 OpenSSL