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34 lines
1.1 KiB
34 lines
1.1 KiB
#include <openssl/aes.h>// error
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#include <openssl/des.h>// error
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#include <string.h>
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void encryptWithAES(const unsigned char* plaintext, size_t plaintext_len,
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const unsigned char key[AES_BLOCK_SIZE], unsigned char* ciphertext) {
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AES_KEY aes;
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// 初始化加密密钥
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if (AES_set_encrypt_key(key, 128, &aes) < 0) {
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// 错误处理：密钥长度不正确等
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}
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// 分配足够的空间来存储结果，因为AES是块加密算法，需要对齐数据块
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unsigned char encrypted[AES_BLOCK_SIZE];
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// 对明文分块加密（这里假设明文已经填充为完整的块）
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for (size_t i = 0; i < plaintext_len; i += AES_BLOCK_SIZE) {
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AES_encrypt(plaintext + i, encrypted, &aes);
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memcpy(ciphertext + i, encrypted, AES_BLOCK_SIZE);
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}
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}
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int main() {
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unsigned char plaintext[16] = { /* 填充原始数据 */ };
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unsigned char key[AES_BLOCK_SIZE] = { /* 填充密钥 */ };
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unsigned char ciphertext[16]; // 用于存储加密后的数据
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encryptWithAES(plaintext, sizeof(plaintext), key, ciphertext);
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// ... 然后可以进一步处理密文 ...
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return 0;
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} |