使用RNCryptor解密base64编码和aes加密的字符串

#import <RNCryptor/RNCryptor.h>

// 解密方法
- (NSString *)decryptBase64AESString:(NSString *)base64String withKey:(NSString *)key andIV:(NSString *)iv {
    NSData *encryptedData = [[NSData alloc] initWithBase64EncodedString:base64String options:0];
    NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
    NSData *ivData = [iv dataUsingEncoding:NSUTF8StringEncoding];
    
    NSError *error = nil;
    NSData *decryptedData = [RNCryptor decryptData:encryptedData withSettings:kRNCryptorAES256Settings password:keyData HMACKey:nil error:&error];
    
    if (error) {
        NSLog(@"解密失败：%@", error.localizedDescription);
        return nil;
    }
    
    NSString *decryptedString = [[NSString alloc] initWithData:decryptedData encoding:NSUTF8StringEncoding];
    return decryptedString;
}

// 使用示例
NSString *base64String = @"..."; // 待解密的base64编码字符串
NSString *key = @"..."; // AES加密时使用的密钥
NSString *iv = @"..."; // AES加密时使用的初始化向量

NSString *decryptedString = [self decryptBase64AESString:base64String withKey:key andIV:iv];
NSLog(@"解密结果：%@", decryptedString);