initial commit

git-svn-id: http://svn.miranda-ng.org/main/trunk@2 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

1 files changed, 170 insertions, 0 deletions

diff --git a/protocols/MSN/des.h b/protocols/MSN/des.h
new file mode 100644
index 0000000000..e1fc923fad
--- /dev/null
+++ b/protocols/MSN/des.h
@@ -0,0 +1,170 @@
+/**
+ * \file des.h
+ */
+#ifndef _DES_H
+#define _DES_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          DES context structure
+ */
+typedef struct
+{
+    unsigned long esk[32];     /*!< DES encryption subkeys */
+    unsigned long dsk[32];     /*!< DES decryption subkeys */
+}
+des_context;
+
+/**
+ * \brief          Triple-DES context structure
+ */
+typedef struct
+{
+    unsigned long esk[96];     /*!< Triple-DES encryption subkeys */
+    unsigned long dsk[96];     /*!< Triple-DES decryption subkeys */
+}
+des3_context;
+
+/**
+ * \brief          DES key schedule (56-bit)
+ *
+ * \param ctx      DES context to be initialized
+ * \param key      8-byte secret key
+ */
+void des_set_key( des_context *ctx, unsigned char key[8] );
+
+/**
+ * \brief          DES block encryption (ECB mode)
+ *
+ * \param ctx      DES context
+ * \param input    plaintext  block
+ * \param output   ciphertext block
+ */
+void des_encrypt( des_context *ctx,
+                  unsigned char input[8],
+                  unsigned char output[8] );
+
+/**
+ * \brief          DES block decryption (ECB mode)
+ *
+ * \param ctx      DES context
+ * \param input    ciphertext block
+ * \param output   plaintext  block
+ */
+void des_decrypt( des_context *ctx,
+                  unsigned char input[8],
+                  unsigned char output[8] );
+
+/**
+ * \brief          DES-CBC buffer encryption
+ *
+ * \param ctx      DES context
+ * \param iv       initialization vector (modified after use)
+ * \param input    buffer holding the plaintext
+ * \param output   buffer holding the ciphertext
+ * \param len      length of the data to be encrypted
+ */
+void des_cbc_encrypt( des_context *ctx,
+                      unsigned char iv[8],
+                      unsigned char *input,
+                      unsigned char *output,
+                      int len );
+
+/**
+ * \brief          DES-CBC buffer decryption
+ *
+ * \param ctx      DES context
+ * \param iv       initialization vector (modified after use)
+ * \param input    buffer holding the ciphertext
+ * \param output   buffer holding the plaintext
+ * \param len      length of the data to be decrypted
+ */
+void des_cbc_decrypt( des_context *ctx,
+                      unsigned char iv[8],
+                      unsigned char *input,
+                      unsigned char *output,
+                      int len );
+
+/**
+ * \brief          Triple-DES key schedule (112-bit)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      16-byte secret key
+ */
+void des3_set_2keys( des3_context *ctx, unsigned char key[16] );
+
+/**
+ * \brief          Triple-DES key schedule (168-bit)
+ *
+ * \param ctx      3DES context to be initialized
+ * \param key      24-byte secret key
+ */
+void des3_set_3keys( des3_context *ctx, unsigned char key[24] );
+
+/**
+ * \brief          Triple-DES block encryption (ECB mode)
+ *
+ * \param ctx      3DES context
+ * \param input    plaintext  block
+ * \param output   ciphertext block
+ */
+void des3_encrypt( des3_context *ctx,
+                   unsigned char input[8],
+                   unsigned char output[8] );
+
+/**
+ * \brief          Triple-DES block decryption (ECB mode)
+ *
+ * \param ctx      3DES context
+ * \param input    ciphertext block
+ * \param output   plaintext  block
+ */
+void des3_decrypt( des3_context *ctx,
+                   unsigned char input[8],
+                   unsigned char output[8] );
+
+/**
+ * \brief          3DES-CBC buffer encryption
+ *
+ * \param ctx      3DES context
+ * \param iv       initialization vector (modified after use)
+ * \param input    buffer holding the plaintext
+ * \param output   buffer holding the ciphertext
+ * \param len      length of the data to be encrypted
+ */
+void des3_cbc_encrypt( des3_context *ctx,
+                       unsigned char iv[8],
+                       unsigned char *input,
+                       unsigned char *output,
+                       int len );
+
+/**
+ * \brief          3DES-CBC buffer decryption
+ *
+ * \param ctx      3DES context
+ * \param iv       initialization vector (modified after use)
+ * \param input    buffer holding the ciphertext
+ * \param output   buffer holding the plaintext
+ * \param len      length of the data to be decrypted
+ */
+void des3_cbc_decrypt( des3_context *ctx,
+                       unsigned char iv[8],
+                       unsigned char *input,
+                       unsigned char *output,
+                       int len );
+
+/*
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int des_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* des.h */