Descr iption： The STM32F215xx and STM32F217xx family is based on the high-performance ARM®Cortex™-M3 32-bit RISC core operating at a frequency of up to 120 MHz. The family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to
Electronic Codebook Mode (ECB),Cipher Block Chaining Mode (CBC).Cipher Feedback Mode (CFB) Only blocks of j <= 64 bits are enciphered at a time. A small j requires more cycles through the encipherment algorithm per unit of plaintext and thus grea
DCPcrypt v2 BETA - 7th June 2000 ================================ This is a beta version of DCPcrypt v2. It doesn't contain all that much documentation but hopefully you will be able to get the idea of what does what. There are a few sample programs
3DES（或称为Triple DES）是三重数据加密算法（TDEA，Triple Data Encryption Algorithm）块密码的通称。它相当于是对每个数据块应用三次DES加密算法。由于计算机运算能力的增强，原版DES密码的密钥长度变得容易被暴力破解；3DES即是设计用来提供一种相对简单的方法，即通过增加DES的密钥长度来避免类似的攻击，而不是设计一种全新的块密码算法。
