如何使用erlang public_key：decrypt_private？

问题描述：

我尝试使用公共RSA密钥加密文本，并使用专用RSA密钥对此文本进行解密。当我加密用户公钥时，它就起作用。如何使用erlang public_key：decrypt_private？

编码PUBLIC_KEY

encrypt_public_key(PlainText, PublicKey) -> 
[ RSAEntry2 ] = public_key:pem_decode(PublicKey), 
PubKey = public_key:pem_entry_decode(RSAEntry2), 
public_key:encrypt_public(PlainText, PubKey).

但是当我尝试使用私钥来解密这个文本，它不工作，我不知道为什么。

解码私钥

decrypt_private_key(CryptText,PrivateKey) -> 
[ RSAEntry2 ] = public_key:pem_decode(PrivateKey), 
PrivKey = public_key:pem_entry_decode(RSAEntry2), 
Result = public_key:decrypt_private(CryptText, PrivKey, rsa_pkcs1_padding), 
Result.

我如何编码，并尝试解码

PublicKey = ems_util:open_file(?SSL_PATH ++ "/" ++ binary_to_list(<<"public_key.pem">>)), 

     CryptoText = ems_util:encrypt_public_key(ResponseData2,PublicKey), 
     PrivateKey = ems_util:open_file(?SSL_PATH ++ "/" ++ binary_to_list(<<"private_key.pem">>)), 
     %erro in this line 
     TextPlain = ems_util:decrypt_private_key(TextCrypt,PrivateKey).

错误

=ERROR REPORT==== 17-Mar-2017::10:59:29 === 
Ranch listener ems_http_server1, connection process <0.2159.0>, stream 1 had its request process <0.2160.0> exit with reason function_clause and stacktrace [{public_key,decrypt_private,[<<55,66,78,123,456,2456>>,<<55,173,2367,140,71>>,asn1_NOVALUE}],[{file,"public_key.erl"},{line,313}]},{ems_util,decrypt_private_key,2,[{file,"src/util/ems_util.erl"},{line,614}]},{ems_auth_user,do_barer_authorization,1,[{file,"src/auth/ems_auth_user.erl"},{line,51}]},{ems_dispatcher,lookup_request,1,[{file,"src/distpatcher/ems_dispatcher.erl"},{line,70}]},{ems_http_handler,init,2,[{file,"src/http/ems_http_handler.erl"},{line,22}]},{cowboy_handler,execute,2,[{file,"src/cowboy_handler.erl"},{line,39}]},{cowboy_stream_h,execute,3,[{file,"src/cowboy_stream_h.erl"},{line,172}]},{cowboy_stream_h,proc_lib_hack,3,[{file,"src/cowboy_stream_h.erl"},{line,157}]}]

我不知道发生了什么。

尝试将'public_key：decrypt_private（CryptText，PrivKey，rsa_pkcs1_padding）'更改为'public_key：decrypt_private（CryptText，PrivKey，[{rsa_pad，rsa_pkcs1_padding}]）''''。 – Dogbert

答

我描述了我的问题的解决方案。问题是公众和私钥生成错误。生成用openssl一对密钥RSA正确的做法是：

openssl genrsa -out private.pem 2048 
openssl rsa -in private.pem -out public.pem -outform PEM -pubout

这些命令生成正确的密钥对，现在的代码IR正常工作。

如何使用erlang public_key：decrypt_private？

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