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Man Pages


Manual Reference Pages  -  KRB5_STRING_TO_ENCTYPE (3)

NAME

krb5_crypto_getblocksize, krb5_crypto_getconfoundersize krb5_crypto_getenctype, krb5_crypto_getpadsize, krb5_crypto_overhead, krb5_decrypt, krb5_decrypt_EncryptedData, krb5_decrypt_ivec, krb5_decrypt_ticket, krb5_encrypt, krb5_encrypt_EncryptedData, krb5_encrypt_ivec, krb5_enctype_disable, krb5_enctype_keysize, krb5_enctype_to_string, krb5_enctype_valid, krb5_get_wrapped_length, krb5_string_to_enctype - encrypt and decrypt data, set and get encryption type parameters

CONTENTS

Library
Synopsis
Description
See Also

LIBRARY

Kerberos 5 Library (libkrb5, -lkrb5)

SYNOPSIS


.In krb5.h krb5_error_code
.Fo krb5_encrypt krb5_context context krb5_crypto crypto unsigned usage void *data size_t len krb5_data *result
.Fc krb5_error_code
.Fo krb5_encrypt_EncryptedData krb5_context context krb5_crypto crypto unsigned usage void *data size_t len int kvno EncryptedData *result
.Fc krb5_error_code
.Fo krb5_encrypt_ivec krb5_context context krb5_crypto crypto unsigned usage void *data size_t len krb5_data *result void *ivec
.Fc krb5_error_code
.Fo krb5_decrypt krb5_context context krb5_crypto crypto unsigned usage void *data size_t len krb5_data *result
.Fc krb5_error_code
.Fo krb5_decrypt_EncryptedData krb5_context context krb5_crypto crypto unsigned usage EncryptedData *e krb5_data *result
.Fc krb5_error_code
.Fo krb5_decrypt_ivec krb5_context context krb5_crypto crypto unsigned usage void *data size_t len krb5_data *result void *ivec
.Fc krb5_error_code
.Fo krb5_decrypt_ticket krb5_context context Ticket *ticket krb5_keyblock *key EncTicketPart *out krb5_flags flags
.Fc krb5_error_code
.Fo krb5_crypto_getblocksize krb5_context context size_t *blocksize
.Fc krb5_error_code
.Fo krb5_crypto_getenctype krb5_context context krb5_crypto crypto krb5_enctype *enctype
.Fc krb5_error_code
.Fo krb5_crypto_getpadsize krb5_context context size_t *padsize
.Fc krb5_error_code
.Fo krb5_crypto_getconfoundersize krb5_context context krb5_crypto crypto size_t *confoundersize
.Fc krb5_error_code
.Fo krb5_enctype_keysize krb5_context context krb5_enctype type size_t *keysize
.Fc krb5_error_code
.Fo krb5_crypto_overhead krb5_context context size_t *padsize
.Fc krb5_error_code
.Fo krb5_string_to_enctype krb5_context context const char *string krb5_enctype *etype
.Fc krb5_error_code
.Fo krb5_enctype_to_string krb5_context context krb5_enctype etype char **string
.Fc krb5_error_code
.Fo krb5_enctype_valid krb5_context context krb5_enctype etype
.Fc void
.Fo krb5_enctype_disable krb5_context context krb5_enctype etype
.Fc size_t
.Fo krb5_get_wrapped_length krb5_context context krb5_crypto crypto size_t data_len
.Fc

DESCRIPTION

These functions are used to encrypt and decrypt data.

krb5_encrypt_ivec puts the encrypted version of data (of size len) in result. If the encryption type supports using derived keys, usage should be the appropriate key-usage. ivec is a pointer to a initial IV, it is modified to the end IV at the end of the round. Ivec should be the size of If NULL is passed in, the default IV is used. krb5_encrypt does the same as krb5_encrypt_ivec but with ivec being NULL. krb5_encrypt_EncryptedData does the same as krb5_encrypt, but it puts the encrypted data in a EncryptedData structure instead. If kvno is not zero, it will be put in the (optional) kvno field in the EncryptedData.

krb5_decrypt_ivec, krb5_decrypt, and krb5_decrypt_EncryptedData works similarly.

krb5_decrypt_ticket decrypts the encrypted part of ticket with key. krb5_decrypt_ticket also verifies the timestamp in the ticket, invalid flag and if the KDC haven’t verified the transited path, the transit path.

krb5_enctype_keysize, krb5_crypto_getconfoundersize, krb5_crypto_getblocksize, krb5_crypto_getenctype, krb5_crypto_getpadsize, krb5_crypto_overhead all returns various (sometimes) useful information from a crypto context. krb5_crypto_overhead is the combination of krb5_crypto_getconfoundersize, krb5_crypto_getblocksize and krb5_crypto_getpadsize and return the maximum overhead size.

krb5_enctype_to_string converts a encryption type number to a string that can be printable and stored. The strings returned should be freed with free(3).

krb5_string_to_enctype converts a encryption type strings to a encryption type number that can use used for other Kerberos crypto functions.

krb5_enctype_valid returns 0 if the encrypt is supported and not disabled, otherwise and error code is returned.

krb5_enctype_disable (globally, for all contextes) disables the enctype.

krb5_get_wrapped_length returns the size of an encrypted packet by crypto of length data_len.

SEE ALSO

krb5_create_checksum(3), krb5_crypto_init(3)
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