Oaep Decoding Error
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Error Occurred While Decoding Oaep Padding Rsacryptoserviceprovider
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Rsacryptoserviceprovider Oaep Padding
programmers, just like you, helping each other. Join them; it only takes a minute: Sign up RSA encrypt then decrypt fails with “oaep decoding error” up vote 1 down vote favorite I am trying to debug a simple openssl program but cannot quite get what openssl means with "oaep decoding error". I have reduced my program to this, test, one: #include #include
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C# Decrypt With Public Key
About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or rsacryptoserviceprovider decrypt with public key posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of http://stackoverflow.com/questions/25222068/rsa-encrypt-then-decrypt-fails-with-oaep-decoding-error 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up RSACryptoServiceProvider error occurred while decoding OAEP padding up vote -1 down vote favorite I've read many articles regarding this problem and I cannot seem to find an answer that solves my bug. I have a WCF http://stackoverflow.com/questions/32322113/rsacryptoserviceprovider-error-occurred-while-decoding-oaep-padding service; my app sends the public RSA key generated and the service returns a set of AES key+IV encrypted with the public key, but when my app then tries to decrypt the keys, I either get "Error occurred while decoding OAEP padding" (if I pass true to useOAEP) or "The parameter is incorrect" (if I pass false to useOAEP). For simplicity, this is the entire code used put together, leaving Exception handling aside: public static string EncryptAES(byte[] aesKey, byte[] aesIV, string publicRSAKey) { using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()) { rsa.FromXmlString(publicRSAKey); byte[] encryptedKey = rsa.Encrypt(aesKey, true); byte[] encryptedIV = rsa.Encrypt(aesIV, true); return string.Format("{0}{1}{2}", Convert.ToBase64String(encryptedKey), "\n", Convert.ToBase64String(encryptedIV)); } } public static byte[] Decrypt(string aesKeyorIV) { using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()) { byte[] buffer = Convert.FromBase64String(aesKeyorIV); rsa.FromXmlString(RSA_Private_Key); return rsa.Decrypt(buffer, true); //Exception thrown here } } (RSA_Private_Key is generated in the static constructor using rsa.ToXmlString(true)) (publicRSAKey is passed to the service by sending rsa.ToXmlString(false) in the static constuctor) I tried using Encrypt/Decrypt(byte
ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/Security/Error occurred while decoding http://forums.asp.net/t/1430677.aspx?Error+occurred+while+decoding+OAEP+padding OAEP padding Error occurred while decoding OAEP padding RSS http://www.chilkatforum.com/questions/7965/rsa-oaep-error 11 replies Last post Jan 29, 2010 01:13 PM by anvilis ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Related Links GuidanceSamples Reply Meetu oaep padding Choudh... Member 278 Points 269 Posts Error occurred while decoding OAEP padding Jun 03, 2009 02:32 AM|Meetu Choudhary|LINK Hi, Iam half th way of my problem,,. Please Help I have succesfuly encrypted the text using public key of digital signatures but while decrypting it. i am error occurred while getting error Error occurred while decoding OAEP padding my piece of code #region Test Encryption public void a() { using (var rsa = new RSACryptoServiceProvider()) { // This String consists only Public Key Information String publicKeyOnly = rsa.ToXmlString(false); // This String consists both Private/Public Key information String publicPrivate = rsa.ToXmlString(true); } } //encrypt public byte[] b(String publicKeyOnly) { String s = "
RSA key pair and storing it on the iOS device. Then later decrypting data using that private key. The RSA instance is configured to use OAEP padding with SHA512 hashing. RSA decryption using the private key works for maybe around 1 week (it seems to be related to the length of time the key is stored on the device. I have no idea why). Then all of a sudden every single decryption attempt throws this error: ChilkatLog: DecryptBytes: DllDate: Feb 25 2015 ChilkatVersion: 9.5.0.48 UnlockPrefix: XXXXXX Architecture: Little Endian; 64-bit Language: IOS Objective-C VerboseLogging: 0 usePrivateKey: 1 rsaDecryptBytes: rsa_decrypt: KeyType: Private InputSize: 512 Padding: OAEP HashAlg: SHA-512 ParamLen: 0 ModulusBitLen: 4096 No leading zero byte for OAEP decoding. OAEP decoding failed. --rsa_decrypt --rsaDecryptBytes Failed. --DecryptBytes --ChilkatLog I made sure the entire xml rsa key pair that is being used is the exact same as it was when it was generated indicating the key didn't get corrupted while stored on the device. Additionally, as soon as I generate a new key pair, everything starts working again. The back end which performs rsa encryption using the device's public key serves many platforms, none of which exhibit this issue. The only difference is that the iOS client is using the Chilkat lib. Any help is appreciated. Thanks! ios rsa asked Mar 31 '15 at 14:51 a432511 5●2 edited Mar 31 '15 at 16:14 jpbro ♦ 1.1k●2●6●18 13 Answers: oldestnewestmost voted 12next page » 0 Here's another thread with the same "No leading zero byte for OAEP decoding" error. Does it help at all? http://www.chilkatforum.com/questions/5686/encrypstringenc-and-decryptstringenc-with-failure link answered Mar 31 '15 at 16:17 jpbro ♦ 1.1k●2●6●18 Unfortunately no. It does not appear to be related. That appears to be a confusion between padding types. This issue is quite strange because it happens after a period of time where all other things remain the same. As in, at no point is any other padding used except OAEP. (Mar 31 '15 at 16:26) a4