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HUAWEI Cloud KMS (DEW) sm2 encryption result is ASN.1 encoding fomat.
密文编码问题
SM2密文由C1、C2、C3三部分构成,如何对SM2密文进行编码在已经公布的两个标准中有所不同,在早期公布的《SM2椭圆曲线公钥密码算法 第4部分:公钥加密算法》中,SM2密文中的三部分依次输出,没有采用如Tag-Length-Value形式的编码,我们称其为Plain编码。在之后公布的GM/T国标中,SM2密文采用ASN.1/DER方式编码。
GmSSL通过SM2_CIPHERTEXT_VALUE对象来表示密文数据结构,函数SM2_do_encrypt()和SM2_do_decrypt()可以生成SM2_CIPHERTEXT_VALUE对象及对其解密,函数SM2_CIPHERTEXT_VALUE_encode()和SM2_CIPHERTEXT_VALUE_decode()实现该对象的Plain编解码。GmSSL预计还会通过函数i2d_SM2_CIPHERTEXT_VALUE()和d2i_SM2_CIPHERTEXT_VALUE()实现该密文对象的ASN.1/DER编解码,以支持最新的GM/T国密标准。
GmSSL的SM2_encrypt()和SM2_decrypt()在加解密的同时也完成SM2_CIPHERTEXT_VALUE对象的编解码。目前采用Plain编解码,在相应功能完成后会替换为ASN.1/DER编码方案。
The text was updated successfully, but these errors were encountered:
support ASN.1 format
c7f3aa3
“在之后公布的GM/T国标中,SM2密文采用ASN.1/DER方式编码。”, 其实我也没找到相应标准,只是华为云KMS也采用这个编码。
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include in v0.7.0
emmansun
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HUAWEI Cloud KMS (DEW) sm2 encryption result is ASN.1 encoding fomat.
密文编码问题
SM2密文由C1、C2、C3三部分构成,如何对SM2密文进行编码在已经公布的两个标准中有所不同,在早期公布的《SM2椭圆曲线公钥密码算法 第4部分:公钥加密算法》中,SM2密文中的三部分依次输出,没有采用如Tag-Length-Value形式的编码,我们称其为Plain编码。在之后公布的GM/T国标中,SM2密文采用ASN.1/DER方式编码。
GmSSL通过SM2_CIPHERTEXT_VALUE对象来表示密文数据结构,函数SM2_do_encrypt()和SM2_do_decrypt()可以生成SM2_CIPHERTEXT_VALUE对象及对其解密,函数SM2_CIPHERTEXT_VALUE_encode()和SM2_CIPHERTEXT_VALUE_decode()实现该对象的Plain编解码。GmSSL预计还会通过函数i2d_SM2_CIPHERTEXT_VALUE()和d2i_SM2_CIPHERTEXT_VALUE()实现该密文对象的ASN.1/DER编解码,以支持最新的GM/T国密标准。
GmSSL的SM2_encrypt()和SM2_decrypt()在加解密的同时也完成SM2_CIPHERTEXT_VALUE对象的编解码。目前采用Plain编解码,在相应功能完成后会替换为ASN.1/DER编码方案。
The text was updated successfully, but these errors were encountered: