putty-source/crypto/blowfish.h

/*
 * Header file shared between blowfish.c and bcrypt.c. Exposes the
 * internal Blowfish routines needed by bcrypt.
 */

typedef struct BlowfishContext BlowfishContext;

BlowfishContext *blowfish_make_context(void);
void blowfish_free_context(BlowfishContext *ctx);
void blowfish_initkey(BlowfishContext *ctx);
void blowfish_expandkey(BlowfishContext *ctx,
                        const void *key, short keybytes,
                        const void *salt, short saltbytes);
void blowfish_lsb_encrypt_ecb(void *blk, int len, BlowfishContext *ctx);
Implementation of OpenSSH's bcrypt. This isn't the same as the standard bcrypt; it's OpenSSH's modification that they use for their new-style key format. In order to implement this, I've broken up blowfish_setkey() into two subfunctions, and provided one of them with an extra optional salt parameter, which is NULL in ordinary Blowfish but used by bcrypt. Also, I've exposed some of sshblowf.c's internal machinery for the new sshbcrypt.c to use. 2015-04-27 19:48:29 +00:00			`/*`
Update source file names in comments and docs. Correcting a source file name in the docs just now reminded me that I've seen a lot of outdated source file names elsewhere in the code, due to all the reorganisation since we moved to cmake. Here's a giant pass of trying to make them all accurate again. 2022-01-22 15:38:53 +00:00			`* Header file shared between blowfish.c and bcrypt.c. Exposes the`
Implementation of OpenSSH's bcrypt. This isn't the same as the standard bcrypt; it's OpenSSH's modification that they use for their new-style key format. In order to implement this, I've broken up blowfish_setkey() into two subfunctions, and provided one of them with an extra optional salt parameter, which is NULL in ordinary Blowfish but used by bcrypt. Also, I've exposed some of sshblowf.c's internal machinery for the new sshbcrypt.c to use. 2015-04-27 19:48:29 +00:00			`* internal Blowfish routines needed by bcrypt.`
			`*/`

			`typedef struct BlowfishContext BlowfishContext;`

Turn SSH-2 ciphers into a classoid. This is more or less the same job as the SSH-1 case, only more extensive, because we have a wider range of ciphers. I'm a bit disappointed about the AES case, in particular, because I feel as if it ought to have been possible to arrange to combine this layer of vtable dispatch with the subsidiary one that selects between hardware and software implementations of the underlying cipher. I may come back later and have another try at that, in fact. 2018-09-13 13:43:04 +00:00			`BlowfishContext *blowfish_make_context(void);`
			`void blowfish_free_context(BlowfishContext *ctx);`
Implementation of OpenSSH's bcrypt. This isn't the same as the standard bcrypt; it's OpenSSH's modification that they use for their new-style key format. In order to implement this, I've broken up blowfish_setkey() into two subfunctions, and provided one of them with an extra optional salt parameter, which is NULL in ordinary Blowfish but used by bcrypt. Also, I've exposed some of sshblowf.c's internal machinery for the new sshbcrypt.c to use. 2015-04-27 19:48:29 +00:00			`void blowfish_initkey(BlowfishContext *ctx);`
			`void blowfish_expandkey(BlowfishContext *ctx,`
Make lots of generic data parameters into 'void '. This is a cleanup I started to notice a need for during the BinarySink work. It removes a lot of faffing about casting things to char or unsigned char * so that some API will accept them, even though lots of such APIs really take a plain 'block of raw binary data' argument and don't care what C thinks the signedness of that data might be - they may well reinterpret it back and forth internally. So I've tried to arrange for all the function call APIs that ought to have a void * (or const void *) to have one, and those that need to do pointer arithmetic on the parameter internally can cast it back at the top of the function. That saves endless ad-hoc casts at the call sites. 2018-05-26 07:31:34 +00:00			`const void *key, short keybytes,`
			`const void *salt, short saltbytes);`
			`void blowfish_lsb_encrypt_ecb(void blk, int len, BlowfishContext ctx);`