问题描述
我尝试使用我用openssl创建的公钥来加密matlab中的一些数据
I try to encrypt some data in matlab using a public key I created with openssl
我使用以下方法创建了密钥：
I created the keys using:
openssl genrsa -des3 -out private.pem 1024
openssl rsa -in private.pem -pubout -outform DER -out public.der
我使用这个matlab代码（使用Java库）加密我的数据：
I encrypt my data using this matlab code (with Java libraries):
import java.security.spec.RSAPublicKeySpec
import javax.crypto.Cipher;
import java.security.KeyFactory
import java.math.BigInteger
fid = fopen('public.der');
a = fread(fid);
key = java.security.spec.X509EncodedKeySpec(a);
kf = KeyFactory.getInstance('RSA');
KEY = kf.generatePublic(key);
cipher = Cipher.getInstance('RSA/ECB/PKCS1Padding');
cipher.init(Cipher.ENCRYPT_MODE, KEY)
plaintextBytes = [24];
ciphertext = cipher.doFinal(plaintextBytes)' ;
fid2 = fopen('msg.txt','w');
fwrite(fid2,ciphertext);
fclose(fid2);
我尝试使用以下方法对其进行解密：
I try to decrypt it using:
openssl rsautl -decrypt -inkey private.pem -in msg.txt -keyform PEM -pkcs
然后我收到此错误：
RSA operation error
80305:error:0407109F:rsa routines:RSA_padding_check_PKCS1_type_2:pkcs decoding error:/BuildRoot/Library/Caches/com.apple.xbs/Sources/OpenSSL098/OpenSSL098-59.40.2/src/crypto/rsa/rsa_pk1.c:267:
80305:error:04065072:rsa routines:RSA_EAY_PRIVATE_DECRYPT:padding check failed:/BuildRoot/Library/Caches/com.apple.xbs/Sources/OpenSSL098/OpenSSL098-59.40.2/src/crypto/rsa/rsa_eay.c:614:
推荐答案
大多数情况下这样的RSA_padding_check_PKCS1_type_2错误...... - 你倾向于看到这个
（1）编码错误：不是解密二进制数据，而是对（可能）Base64编码数据进行解密。
（2）密钥对或密钥本身不匹配：公钥与私钥不匹配以进行解密。
Most of the time for such "RSA_padding_check_PKCS1_type_2 error ..." - you tends to see this with (1) Encoding errors: instead of decrypting binary data, decrypting is done on (maybe) Base64 encoded data. (2) Mismatched key pair or key itself: Public key does not matched to the Private key for decryption.http://hustoknow.blogspot.ca/2013/01/rsa-block-type-is-not-02-error.html
也许我们可以确保这对在说密码加载不正确之前（2）也没有不匹配（2）。如下所示参考
After making sure we have the "pem", we can try the encrypt and decrypt as stated in http://openssl.6102.n7.nabble.com/unable-to-decrypt-using-using-private-key-td15204.html
如1）openssl enc -base64 -d -in -out创建的地方，它有二进制内容。
，例如2）openssl rsautl -decrypt -inkey -out -pkcs
但在这种情况下，请考虑使用-raw而不是-pkcs来解密数据与服务器私有
密钥
e.g. 1) openssl enc -base64 -d -in -out where was created and it had binary contents.e.g. 2) openssl rsautl -decrypt -inkey -out -pkcs but in this case, consider trying to use -raw instead of -pkcs to decrypt data with server private key
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