Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
KRB5_ENCRYPT(3)	       FreeBSD Library Functions Manual	       KRB5_ENCRYPT(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 encryp-
     tion type parameters

LIBRARY
     Kerberos 5	Library	(libkrb5, -lkrb5)

SYNOPSIS
     #include <krb5.h>

     krb5_error_code
     krb5_encrypt(krb5_context context,	krb5_crypto crypto, unsigned usage,
	 void *data, size_t len, krb5_data *result);

     krb5_error_code
     krb5_encrypt_EncryptedData(krb5_context context, krb5_crypto crypto,
	 unsigned usage, void *data, size_t len, int kvno,
	 EncryptedData *result);

     krb5_error_code
     krb5_encrypt_ivec(krb5_context context, krb5_crypto crypto,
	 unsigned usage, void *data, size_t len, krb5_data *result,
	 void *ivec);

     krb5_error_code
     krb5_decrypt(krb5_context context,	krb5_crypto crypto, unsigned usage,
	 void *data, size_t len, krb5_data *result);

     krb5_error_code
     krb5_decrypt_EncryptedData(krb5_context context, krb5_crypto crypto,
	 unsigned usage, EncryptedData *e, krb5_data *result);

     krb5_error_code
     krb5_decrypt_ivec(krb5_context context, krb5_crypto crypto,
	 unsigned usage, void *data, size_t len, krb5_data *result,
	 void *ivec);

     krb5_error_code
     krb5_decrypt_ticket(krb5_context context, Ticket *ticket,
	 krb5_keyblock *key, EncTicketPart *out, krb5_flags flags);

     krb5_error_code
     krb5_crypto_getblocksize(krb5_context context, size_t *blocksize);

     krb5_error_code
     krb5_crypto_getenctype(krb5_context context, krb5_crypto crypto,
	 krb5_enctype *enctype);

     krb5_error_code
     krb5_crypto_getpadsize(krb5_context context, size_t, *padsize");

     krb5_error_code
     krb5_crypto_getconfoundersize(krb5_context	context, krb5_crypto crypto,
	 size_t, *confoundersize");

     krb5_error_code
     krb5_enctype_keysize(krb5_context context,	krb5_enctype type,
	 size_t	*keysize);

     krb5_error_code
     krb5_crypto_overhead(krb5_context context,	size_t,	*padsize");

     krb5_error_code
     krb5_string_to_enctype(krb5_context context, const	char *string,
	 krb5_enctype *etype);

     krb5_error_code
     krb5_enctype_to_string(krb5_context context, krb5_enctype etype,
	 char **string);

     krb5_error_code
     krb5_enctype_valid(krb5_context context, krb5_enctype etype);

     void
     krb5_enctype_disable(krb5_context context,	krb5_enctype etype);

     size_t
     krb5_get_wrapped_length(krb5_context context, krb5_crypto crypto,
	 size_t	data_len);

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_getconfounder-
     size, 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 encryp-
     tion type number that can use used	for other Kerberos crypto functions.

     krb5_enctype_valid() returns 0 if the encrypt is supported	and not	dis-
     abled, 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)

HEIMDAL				March 20, 2004			       HEIMDAL

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=krb5_encrypt&sektion=3&manpath=FreeBSD+13.0-RELEASE+and+Ports>

home | help