Younger

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使用 SM2 加密时,调用+ (nullable NSString *)encryptText:(NSString *)plaintext publicKey:(NSString *)publicKey 这个方法,发生如下崩溃。请大佬解惑 ![image](https://user-images.githubusercontent.com/13920746/159698771-f8ac964d-e979-4741-90c9-805ecf8b3b10.png)

![image](https://user-images.githubusercontent.com/13920746/93437075-271fd280-f8fe-11ea-8e9f-5df7b4df6553.png)