Re: [openssl-users] How to make EVP functions returns false

Can any one help me on this? Thanks. -- View this message in context: http://openssl.6102.n7.nabble.com/How-to-make-EVP-functions-returns-false-tp67775p68091.html Sent from the OpenSSL - User mailing list archive at Nabble.com. -- openssl-users mailing list To unsubscribe: https://mta.openssl.

[openssl-users] How to make EVP functions returns false

Hi, I am using EVP encryption and decryption and rsa key generation api from openssl for my project. I need to write unit tests for my code including failure conditions also. Could you please help me to make below functions returns false without getting valgrind error. 1. EVP_EncryptInit_ex() & EVP

Re: [openssl-users] Is SHA hashing algorithm reversable?

Hello, Ya you are correct James. But my doubt is what is the best method to hash the password securely with salt. I mean which method is preferred by openssl, HashValue = Hash(password + salt). HashValue = Hash( Hash(password) + salt). or something else? HashValue = Hash(password) + Hash(salt).

Re: [openssl-users] Is SHA hashing algorithm reversable?

Thanks for all the information provided. Really its very nice information. And one more question, if i am using a salt with the password for computing a hash value i need to store the salt for future reference and what about the scenario when attacker gets that salt and hash. That time it may be r

[openssl-users] Is SHA hashing algorithm reversable?

Hi, I going to use SHA256 algorithm for storing my passwords in secure manner. But after reading some documentations related to SHA i come to know it is not reversable. Yes hashing means its not reversable only. But i saw some online websites giving the original data by reversing the hash data. i

[openssl-users] Need information on AES encryption and decryption Key and IV type

Hi,, I am using Openssl for encryption and decryption. I need some information on AES encryption and decryption key and iv type. My doubt is when we are using a openssl in command line we need to pass key and iv as hex strings right? and same when we are EVP calls in C/C++ programming what is the

Re: [openssl-users] Problem in decryption using python which cipher text is encrypted in c++

Thanks for your reply. Correct me if i am wrong. What i have understood from your point is, i have to read the first 2 char of 32 char IV and convert into a byte array right? For example: my IV "12345678901234567890123456789012" I have read first 2 char i.e "12" then i have to convert it into byte

[openssl-users] Problem in decryption using python which cipher text is encrypted in c++

Hi, I have encrypted a free text in C++ using a EVP calls with CFB mode and 32 bytes of IV (Hex String). Then i am passing this cipher text to my another end which is using a python(PyCrypto library) code to decrypt a cipher text using same Key and IV. But i am getting error "IV must be of 16 byte

[openssl-users] Problem in RSA encrypt and Decrypt using EVP

Hi, I have problem in RSA encrypt and decrypt using EVP methods. My below program is some times working fine and some times it fails to decrypt the message. That means when i executing the below code 2 times working fine 3rd time it fails to decrypt. Please point out the error. Code: #include #

Re: [openssl-users] Convert RSA key string to PEM file.

Ya your example looks good. Thanks. And i have another method, i have created BIO by passing that key to BIO_new_mem_buf function then from that BIO i got a RSA structure using PEM_read_bio_RSAPublicKey function. Is that will work for me??? Code: RSA* CreateRSAStruct(void* data, GetKey type) {

[openssl-users] Difference between BIO and Normal openssl functions

Hi, I have seen both BIO and normal openssl functions. Actually what is the difference between both the functions. Example: We have PEM_read_BIO_RSAPrivatekey and PEM_read_RSAPrivatekey functions, What makes these functions different from each other -- View this message in context: http:/

[openssl-users] Convert RSA key string to PEM file.

Hi, I have a RSA Public key as string type. I need to convert this string to PEM file. Please help me to create PEM file from string type. If u have any sample programs pls post it also for better understanding. -- View this message in context: http://openssl.6102.n7.nabble.com/Convert-RSA-key