文件列表:

Makefile (126, 2016-05-05)
bitwise_operations.c (2884, 2016-05-05)
des_encrypt.c (12488, 2016-05-05)
des_encrypt.h (495, 2016-05-05)
des_key_functions.c (1207, 2016-05-05)
des_utils.h (2533, 2016-05-05)
file_ops.c (1212, 2016-05-05)
file_ops.h (203, 2016-05-05)
main.c (4283, 2016-05-05)
plaintext.txt (22, 2016-05-05)
rsa_utils.c (4511, 2016-05-05)
rsa_utils.h (611, 2016-05-05)
utils.c (903, 2016-05-05)
utils.h (208, 2016-05-05)

This program does the following: 1. Decryptes a session key using a third party RSA public key. 2. Saves the plaintext session key to file. 3. Encryptes a provided plaintext using DES with a key and iv derived from the session key. 4. Signs the ciphertext of the plaintext with an RSA private key. 5. Saves the ciphertext and the signature. --------------------------------- COMPILATION ------------------------------------ A makefile has been included. All it does is compile everything and include the lcrypto library required for the EVP openssl calls. Once 'make' has finished a new executable named 'EncAndSign' will be created. ----------------------------------- USAGE ----------------------------------------- To use the program the following must be provided: 1. A plaintext file 2. A PUBLIC KEY in PEM format (presumably a third party public key) 3. A Session Key 4. A PRIVATE KEY in PEM format Example usage: ./EncAndSign -p plaintext -pubk public.key -sk encrypted.key -privk private_key.pem Let's go over the arguments: -p Include a plaintext file to encrypt using DES. -pubk Include a public Key file in PEM format -sk A session key for symmetric encryption. (Must be 512 bytes, only first 8 bytes will be used.) -privk A private key file in PEM format Running the above command will output several files those files are: 1. sessionKey.key The saved plaintext sessionkey. 2. output.bin The ciphertext of the provided DES file. 3. signature A signature of the SHA256 hash of the ciphertext. ---------------------------------- OPTIONAL ARGS ------------------------------------- There are a few convenience arguments that are accepted by the program. First and foremost, if you want to see what exactly is happening at runtime, enable the debug argument, '-d'. Also, incase you want to change the name of the output files here are a few extra args: -kout Name the file where the plaintext session key will be outputted to. -out Name the file where the ciphertext of the plaintext will be saved. -sigout The name of the file where the signature is placed.

近期下载者：

相关文件：

评论：[我要评论] [举报此文件]

收藏者：