rsa

问题 I'm writing a program in Java that generates RSA keys using Crt parameters. I'm able to export the key in a .pem file, but I need to export it in a pkcs12 file. How can I do that in Java? 回答1: Java contains native support for PKCS#12 key stores through KeyStore.getInstance("PKCS12") . However, generally the key stores require you to offer a matching private key / certificate pair. Just providing a public key instead of a certificate is not enough. You must create a certificate, for instance a

问题 Is there any ready to use implementation of RSA encryption algorithm for Excel( just encrypt a plain text using given public key, nothing else ) ? Or I need to implement it from the beginning ? I Google but found nothing useful. Any useful links is welcome. UPDATE: I need a non-commercial library. 回答1: This site Simple RSA Encryption and this site have some example code for both VBA and .NET 来源： https://stackoverflow.com/questions/13500280/rsa-encryption-using-microsoft-excel

问题 Is there any ready to use implementation of RSA encryption algorithm for Excel( just encrypt a plain text using given public key, nothing else ) ? Or I need to implement it from the beginning ? I Google but found nothing useful. Any useful links is welcome. UPDATE: I need a non-commercial library. 回答1: This site Simple RSA Encryption and this site have some example code for both VBA and .NET 来源： https://stackoverflow.com/questions/13500280/rsa-encryption-using-microsoft-excel

问题 Is there any ready to use implementation of RSA encryption algorithm for Excel( just encrypt a plain text using given public key, nothing else ) ? Or I need to implement it from the beginning ? I Google but found nothing useful. Any useful links is welcome. UPDATE: I need a non-commercial library. 回答1: This site Simple RSA Encryption and this site have some example code for both VBA and .NET 来源： https://stackoverflow.com/questions/13500280/rsa-encryption-using-microsoft-excel

问题 Is there any ready to use implementation of RSA encryption algorithm for Excel( just encrypt a plain text using given public key, nothing else ) ? Or I need to implement it from the beginning ? I Google but found nothing useful. Any useful links is welcome. UPDATE: I need a non-commercial library. 回答1: This site Simple RSA Encryption and this site have some example code for both VBA and .NET 来源： https://stackoverflow.com/questions/13500280/rsa-encryption-using-microsoft-excel

问题 Trying to validate PDF signature isn't working. The PDF were signed by Adobe Acrobat and then trying to verify it with the public key of the client certificate. So I get the public key of the client certificate, hash the PDF and verify if the hash is equal to the pdf signature, but it fails. HttpClientCertificate cert = request.ClientCertificate; X509Certificate2 cert2 = new X509Certificate2(cert.Certificate); PdfReader pdfreader = new PdfReader("path_to_file"); AcroFields fields = pdfreader

问题 Trying to validate PDF signature isn't working. The PDF were signed by Adobe Acrobat and then trying to verify it with the public key of the client certificate. So I get the public key of the client certificate, hash the PDF and verify if the hash is equal to the pdf signature, but it fails. HttpClientCertificate cert = request.ClientCertificate; X509Certificate2 cert2 = new X509Certificate2(cert.Certificate); PdfReader pdfreader = new PdfReader("path_to_file"); AcroFields fields = pdfreader

问题 I have some data of an X509v3 certificate that is used at a central licensing station. My question is is the following amount of information enough for me to decrypt data using C# code? And additionally, how are the certificate properties imported into a project? Do I have to create a certificate file in order to go on? Known to me are: Subject Serial Number Issuer "root-ca" Public Key Algorithm: "rsaEncryption" RSA Modulus, 128 bytes RSA Public Key Exponent X509v3 Extended Key Usage:

问题 I have some data of an X509v3 certificate that is used at a central licensing station. My question is is the following amount of information enough for me to decrypt data using C# code? And additionally, how are the certificate properties imported into a project? Do I have to create a certificate file in order to go on? Known to me are: Subject Serial Number Issuer "root-ca" Public Key Algorithm: "rsaEncryption" RSA Modulus, 128 bytes RSA Public Key Exponent X509v3 Extended Key Usage:

问题 I'm getting android.security.KeyStoreException: Unknown error On a rare number of devices with different Android Versions (6 - 8) This is my key generation code: final KeyPairGenerator keyGenerator = KeyPairGenerator .getInstance(KeyProperties.KEY_ALGORITHM_RSA, ANDROID_KEY_STORE); keyGenerator.initialize(new KeyGenParameterSpec.Builder(ALIAS, KeyProperties.PURPOSE_ENCRYPT | KeyProperties.PURPOSE_DECRYPT) .setKeySize(2048) .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_RSA_PKCS1)