%commonents; %booktitles; ]> des_crypt3EXT 29 Dec 1996 &man3ext; &release; generic Copyright (c) 1996, Sun Microsystems, Inc. des_crypt — fast DES encryption fast DES encryption — des_cryptecb_crypt — fast DES encryption fast DES encryption — ecb_cryptcbc_crypt — fast DES encryption fast DES encryption — cbc_cryptdes_setparity — fast DES encryption fast DES encryption — des_setparity DES_FAILED — fast DES encryption fast DES encryption — DES_FAILED des_cryptecb_crypt cbc_cryptdes_setparityDES_FAILED fast DES encryption #include <rpc/des_crypt.h> int ecb_crypt char *key char *data unsigned datalenunsigned mode int cbc_crypt char *key char *data unsigned datalen unsigned modechar * ivec void des_setparitychar * key int DES_FAILEDint stat ecb_crypt and cbc_crypt implement the NBS DES (Data Encryption Standard). These routines are faster and more general purpose than crypt3C. They also are able to utilize DES hardware if it is available. ecb_crypt encrypts in ECB (Electronic Code Book) mode, which encrypts blocks of data independently. cbc_crypt encrypts in CBC (Cipher Block Chaining) mode, which chains together successive blocks. CBC mode protects against insertions, deletions, and substitutions of blocks. Also, regularities in the clear text will not appear in the cipher text. The first parameter, key, is the 8-byte encryption key with parity. To set the key's parity, which for DES is in the low bit of each byte, use des_setparity. The second parameter, data, contains the data to be encrypted or decrypted. The third parameter, datalen, is the length in bytes of data, which must be a multiple of 8. The fourth parameter, mode, is formed by OR'ing together the DES_ENCRYPT or DES_DECRYPT to specify the encryption direction and DES_HW or DES_SW to specify software or hardware encryption. If DES_HW is specified, and there is no hardware, then the encryption is performed in software and the routine returns DESERR_NOHWDEVICE. For cbc_crypt, the parameter ivec is the 8-byte initialization vector for the chaining. It is updated to the next initialization vector upon successful return. Given a result status stat, the macro DES_FAILED is false only for the first two statuses. DESERR_NONE No error. DESERR_NOHWDEVICE Encryption succeeded, but done in software instead of the requested hardware. DESERR_HWERROR An error occurred in the hardware or driver. DESERR_BADPARAM Bad parameter to routine. See attributes5 for descriptions of the following attributes: ATTRIBUTE TYPEATTRIBUTE VALUE AvailabilitySUNWcry MT-LevelMT-Safe crypt3C, attributes5 This program is not available on software shipped outside the U.S. These routines are available only with the U.S. Encryption kit. When compiling multi-thread applications, the _REENTRANT flag must be defined on the compile line. This flag should only be used in multi-thread applications.