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Improve documentation of CBC functions

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Manuel Pégourié-Gonnard 2015-01-23 16:19:47 +00:00
parent cfa9a45dd6
commit 2be147a9cb
4 changed files with 72 additions and 0 deletions
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24
include/polarssl/aes.h
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@ -129,6 +129,14 @@ int aes_crypt_ecb( aes_context *ctx,
* Length should be a multiple of the block
* size (16 bytes)
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx AES context
* \param mode AES_ENCRYPT or AES_DECRYPT
* \param length length of the input data
@ -154,6 +162,14 @@ int aes_crypt_cbc( aes_context *ctx,
* both encryption and decryption. So a context initialized with
* aes_setkey_enc() for both AES_ENCRYPT and AES_DECRYPT.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx AES context
* \param mode AES_ENCRYPT or AES_DECRYPT
* \param length length of the input data
@ -179,6 +195,14 @@ int aes_crypt_cfb128( aes_context *ctx,
* both encryption and decryption. So a context initialized with
* aes_setkey_enc() for both AES_ENCRYPT and AES_DECRYPT.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx AES context
* \param mode AES_ENCRYPT or AES_DECRYPT
* \param length length of the input data

16
include/polarssl/blowfish.h
View File

@ -114,6 +114,14 @@ int blowfish_crypt_ecb( blowfish_context *ctx,
* Length should be a multiple of the block
* size (8 bytes)
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx Blowfish context
* \param mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
* \param length length of the input data
@ -136,6 +144,14 @@ int blowfish_crypt_cbc( blowfish_context *ctx,
/**
* \brief Blowfish CFB buffer encryption/decryption.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx Blowfish context
* \param mode BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
* \param length length of the input data

16
include/polarssl/camellia.h
View File

@ -122,6 +122,14 @@ int camellia_crypt_ecb( camellia_context *ctx,
* Length should be a multiple of the block
* size (16 bytes)
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx CAMELLIA context
* \param mode CAMELLIA_ENCRYPT or CAMELLIA_DECRYPT
* \param length length of the input data
@ -148,6 +156,14 @@ int camellia_crypt_cbc( camellia_context *ctx,
* both encryption and decryption. So a context initialized with
* camellia_setkey_enc() for both CAMELLIA_ENCRYPT and CAMELLIE_DECRYPT.
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx CAMELLIA context
* \param mode CAMELLIA_ENCRYPT or CAMELLIA_DECRYPT
* \param length length of the input data

16
include/polarssl/des.h
View File

@ -214,6 +214,14 @@ int des_crypt_ecb( des_context *ctx,
/**
* \brief DES-CBC buffer encryption/decryption
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx DES context
* \param mode DES_ENCRYPT or DES_DECRYPT
* \param length length of the input data
@ -246,6 +254,14 @@ int des3_crypt_ecb( des3_context *ctx,
/**
* \brief 3DES-CBC buffer encryption/decryption
*
* \note Upon exit, the content of the IV is updated so that you can
* call the function same function again on the following
* block(s) of data and get the same result as if it was
* encrypted in one call. This allows a "streaming" usage.
* If on the other hand you need to retain the contents of the
* IV, you should either save it manually or use the cipher
* module instead.
*
* \param ctx 3DES context
* \param mode DES_ENCRYPT or DES_DECRYPT
* \param length length of the input data