+typedef struct DES_ks {
+ union {
+ DES_cblock cblock;
+ /*
+ * make sure things are correct size on machines with 8 byte longs
+ */
+ DES_LONG deslong[2];
+ } ks[16];
+} DES_key_schedule;
+
+# ifndef OPENSSL_DISABLE_OLD_DES_SUPPORT
+# ifndef OPENSSL_ENABLE_OLD_DES_SUPPORT
+# define OPENSSL_ENABLE_OLD_DES_SUPPORT
+# endif
+# endif
+
+# ifdef OPENSSL_ENABLE_OLD_DES_SUPPORT
+# include <openssl/des_old.h>
+# endif
+
+# define DES_KEY_SZ (sizeof(DES_cblock))
+# define DES_SCHEDULE_SZ (sizeof(DES_key_schedule))
+
+# define DES_ENCRYPT 1
+# define DES_DECRYPT 0
+
+# define DES_CBC_MODE 0
+# define DES_PCBC_MODE 1
+
+# define DES_ecb2_encrypt(i,o,k1,k2,e) \
+ DES_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
+
+# define DES_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
+ DES_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
+
+# define DES_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
+ DES_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
+
+# define DES_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
+ DES_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
+
+OPENSSL_DECLARE_GLOBAL(int, DES_check_key); /* defaults to false */
+# define DES_check_key OPENSSL_GLOBAL_REF(DES_check_key)
+OPENSSL_DECLARE_GLOBAL(int, DES_rw_mode); /* defaults to DES_PCBC_MODE */
+# define DES_rw_mode OPENSSL_GLOBAL_REF(DES_rw_mode)
+
+const char *DES_options(void);
+void DES_ecb3_encrypt(const_DES_cblock *input, DES_cblock *output,
+ DES_key_schedule *ks1, DES_key_schedule *ks2,
+ DES_key_schedule *ks3, int enc);
+DES_LONG DES_cbc_cksum(const unsigned char *input, DES_cblock *output,
+ long length, DES_key_schedule *schedule,
+ const_DES_cblock *ivec);
+/* DES_cbc_encrypt does not update the IV! Use DES_ncbc_encrypt instead. */
+void DES_cbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc);
+void DES_ncbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc);
+void DES_xcbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, const_DES_cblock *inw,
+ const_DES_cblock *outw, int enc);
+void DES_cfb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc);
+void DES_ecb_encrypt(const_DES_cblock *input, DES_cblock *output,
+ DES_key_schedule *ks, int enc);
+
+/*
+ * This is the DES encryption function that gets called by just about every
+ * other DES routine in the library. You should not use this function except
+ * to implement 'modes' of DES. I say this because the functions that call
+ * this routine do the conversion from 'char *' to long, and this needs to be
+ * done to make sure 'non-aligned' memory access do not occur. The
+ * characters are loaded 'little endian'. Data is a pointer to 2 unsigned
+ * long's and ks is the DES_key_schedule to use. enc, is non zero specifies
+ * encryption, zero if decryption.
+ */
+void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc);
+
+/*
+ * This functions is the same as DES_encrypt1() except that the DES initial
+ * permutation (IP) and final permutation (FP) have been left out. As for
+ * DES_encrypt1(), you should not use this function. It is used by the
+ * routines in the library that implement triple DES. IP() DES_encrypt2()
+ * DES_encrypt2() DES_encrypt2() FP() is the same as DES_encrypt1()
+ * DES_encrypt1() DES_encrypt1() except faster :-).
+ */
+void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc);
+
+void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3);
+void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3);
+void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length,
+ DES_key_schedule *ks1, DES_key_schedule *ks2,
+ DES_key_schedule *ks3, DES_cblock *ivec, int enc);
+void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3,
+ DES_cblock *ivec, int *num, int enc);
+void DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out,
+ int numbits, long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3,
+ DES_cblock *ivec, int enc);
+void DES_ede3_ofb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3,
+ DES_cblock *ivec, int *num);
+# if 0
+void DES_xwhite_in2out(const_DES_cblock *DES_key, const_DES_cblock *in_white,
+ DES_cblock *out_white);
+# endif
+
+int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched,
+ DES_cblock *iv);
+int DES_enc_write(int fd, const void *buf, int len, DES_key_schedule *sched,
+ DES_cblock *iv);
+char *DES_fcrypt(const char *buf, const char *salt, char *ret);
+char *DES_crypt(const char *buf, const char *salt);
+void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec);
+void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc);
+DES_LONG DES_quad_cksum(const unsigned char *input, DES_cblock output[],
+ long length, int out_count, DES_cblock *seed);
+int DES_random_key(DES_cblock *ret);
+void DES_set_odd_parity(DES_cblock *key);
+int DES_check_key_parity(const_DES_cblock *key);
+int DES_is_weak_key(const_DES_cblock *key);
+/*
+ * DES_set_key (= set_key = DES_key_sched = key_sched) calls
+ * DES_set_key_checked if global variable DES_check_key is set,
+ * DES_set_key_unchecked otherwise.
+ */
+int DES_set_key(const_DES_cblock *key, DES_key_schedule *schedule);
+int DES_key_sched(const_DES_cblock *key, DES_key_schedule *schedule);
+int DES_set_key_checked(const_DES_cblock *key, DES_key_schedule *schedule);
+void DES_set_key_unchecked(const_DES_cblock *key, DES_key_schedule *schedule);
+void DES_string_to_key(const char *str, DES_cblock *key);
+void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2);
+void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int *num, int enc);
+void DES_ofb64_encrypt(const unsigned char *in, unsigned char *out,
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int *num);
+
+int DES_read_password(DES_cblock *key, const char *prompt, int verify);
+int DES_read_2passwords(DES_cblock *key1, DES_cblock *key2,
+ const char *prompt, int verify);
+
+# define DES_fixup_key_parity DES_set_odd_parity