# MIT Kerberos Documentation

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# krb5_k_encrypt - Encrypt data using a key (operates on opaque key).

krb5_error_code `krb5_k_encrypt`(krb5_context context, krb5_key key, krb5_keyusage usage, const krb5_data * cipher_state, const krb5_data * input, krb5_enc_data * output)

param: | [in] context - Library context [in] key - Encryption key [in] usage - Key usage (see `KRB5_KEYUSAGE` types) [inout] cipher_state - Cipher state; specify NULL if not needed [in] input - Data to be encrypted [out] output - Encrypted data

retval: | 0 Success; otherwise - Kerberos error codes

This function encrypts the data block input and stores the output into output . The actual encryption key will be derived from key and usage if key derivation is specified for the encryption type. If non-null, cipher_state specifies the beginning state for the encryption operation, and is updated with the state to be passed as input to the next operation.

Note

The caller must initialize output and allocate at least enough space for the result (using `krb5_c_encrypt_length()` to determine the amount of space needed). output->length will be set to the actual length of the ciphertext.