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7e8e820153
- [auth-rh-rsa.c auth-rsa.c authfd.c authfd.h hostfile.c mpaux.c]
[mpaux.h ssh-add.c ssh-agent.c ssh.h ssh.c sshd.c]
the keysize of rsa-parameter 'n' is passed implizit,
a few more checks and warnings about 'pretended' keysizes.
- [cipher.c cipher.h packet.c packet.h sshd.c]
remove support for cipher RC4
- [ssh.c]
a note for legay systems about secuity issues with permanently_set_uid(),
the private hostkey and ptrace()
- [sshconnect.c]
more detailed messages about adding and checking hostkeys
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/*
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cipher.h
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Author: Tatu Ylonen <ylo@cs.hut.fi>
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Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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All rights reserved
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Created: Wed Apr 19 16:50:42 1995 ylo
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*/
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/* RCSID("$Id: cipher.h,v 1.3 1999/11/16 02:37:16 damien Exp $"); */
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#ifndef CIPHER_H
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#define CIPHER_H
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#include "config.h"
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#ifdef HAVE_OPENSSL
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#include <openssl/des.h>
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#include <openssl/blowfish.h>
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#endif
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#ifdef HAVE_SSL
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#include <ssl/des.h>
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#include <ssl/blowfish.h>
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#endif
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/* Cipher types. New types can be added, but old types should not be removed
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for compatibility. The maximum allowed value is 31. */
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#define SSH_CIPHER_NOT_SET -1 /* None selected (invalid number). */
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#define SSH_CIPHER_NONE 0 /* no encryption */
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#define SSH_CIPHER_IDEA 1 /* IDEA CFB */
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#define SSH_CIPHER_DES 2 /* DES CBC */
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#define SSH_CIPHER_3DES 3 /* 3DES CBC */
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#define SSH_CIPHER_BROKEN_TSS 4 /* TRI's Simple Stream encryption CBC */
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#define SSH_CIPHER_BROKEN_RC4 5 /* Alleged RC4 */
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#define SSH_CIPHER_BLOWFISH 6
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typedef struct {
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unsigned int type;
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union {
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struct {
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des_key_schedule key1;
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des_key_schedule key2;
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des_cblock iv2;
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des_key_schedule key3;
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des_cblock iv3;
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} des3;
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struct {
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struct bf_key_st key;
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unsigned char iv[8];
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} bf;
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} u;
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} CipherContext;
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/* Returns a bit mask indicating which ciphers are supported by this
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implementation. The bit mask has the corresponding bit set of each
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supported cipher. */
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unsigned int cipher_mask();
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/* Returns the name of the cipher. */
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const char *cipher_name(int cipher);
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/* Parses the name of the cipher. Returns the number of the corresponding
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cipher, or -1 on error. */
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int cipher_number(const char *name);
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/* Selects the cipher to use and sets the key. If for_encryption is true,
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the key is setup for encryption; otherwise it is setup for decryption. */
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void cipher_set_key(CipherContext *context, int cipher,
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const unsigned char *key, int keylen, int for_encryption);
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/* Sets key for the cipher by computing the MD5 checksum of the passphrase,
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and using the resulting 16 bytes as the key. */
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void cipher_set_key_string(CipherContext *context, int cipher,
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const char *passphrase, int for_encryption);
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/* Encrypts data using the cipher. */
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void cipher_encrypt(CipherContext *context, unsigned char *dest,
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const unsigned char *src, unsigned int len);
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/* Decrypts data using the cipher. */
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void cipher_decrypt(CipherContext *context, unsigned char *dest,
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const unsigned char *src, unsigned int len);
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/* If and CRC-32 attack is detected this function is called. Defaults
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* to fatal, changed to packet_disconnect in sshd and ssh. */
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extern void (*cipher_attack_detected)(const char *fmt, ...);
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#endif /* CIPHER_H */
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