Questions tagged [libgcrypt]
73 questions
1
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1 answer
(Newbie) ld exit return 1, and libgcrypt
After much research, trying to find out how to link libraries to gcc, going to /usr/bin and /usr/lib confirming the stuff are there. When I try to compile my keygen file, this is the error it blurts out.
$ gcc keygen.c -W -Wall…
zodkc
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1 answer
Compile gcrypt for Vala
I'm try to compile a code write in Vala using a .vapi of libgcrypt.
I installed the library in the system and i run a test in c. The code write in C compiles without errors:
I typed the following command to compile the C code:
gcc -o main main.c -l…
Kyul
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1
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1 answer
Static linking creates Segmentation Fault error
I have a problem linking my C application statically. All libraries exist (.a) and just a month ago I was able to static link my application without an error. But as soon as I activate the static linking option in eclipse, I can compile without an…
m_hau
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1 answer
Endianness of BcryptSignHash output signature
The private and public key blobs generated by BcryptGenerateKeyPair are big-endian encoded (http://msdn.microsoft.com/en-us/library/windows/desktop/aa375520%28v=vs.85%29.aspx).
Using these keys, i sign a data using BcryptSignHash and generate a…
Fazlin
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1
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2 answers
Print unsigned int (base 10 / decimal) value of MPI
I'm trying to confirm/get the unsigned int (base 10 / decimal) value of an hex'd mpi value. I'm using the following code:
#include
#include
static gcry_mpi_t privkey = NULL;
int main(){
char *parmstr =…
invalidusername
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1
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0 answers
Building/Linking libgcrypt for Mingw
I'd like to implement some features of libgcrypt in my program, but it is currently running on Windows, OSX, and Linux (Arch/Xubuntu), so I can only really do so if I can build it for all three platforms. On OSX and Linux I had no problem.
I got the…
Dakota West
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1 answer
Memory management in C when using gcry_malloc_secure
I'm using libgcrypt 1.5.0 under GNU/Linux to develop a small aes256-cbc file encryption software.
I have a doubt regarding secure memory and data swapped out to disk.
Let's say I have this code:
char *crypto_key;
crypto_key =…
polslinux
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1
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1 answer
AES128/CBC test not working
This is my code (the errors checking were deliberately omitted for code readability):
#include
#include
#include
#include
#define GCRYPT_VERSION "1.5.0"
#define GCRY_CIPHER GCRY_CIPHER_AES128
int…
polslinux
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1
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2 answers
Compression and Encryption... Which to apply first?
I am working on a remote backup project in C...
I want to send data and compress as well as encrypt the data.
However I am confused whether to compress first or encrypt first!
What will be better?:
Compress the data and then encrypt it
Encrypt the…
Sam
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2 answers
C Libgcrypt: Unable to check if number is prime using libgcrypt
I am using a libgcrypt function gcry_prime_check to test if the number 3 is a prime number. It turns out 3 is not a prime number according to my the function. What am i doing wrong?
Here is my code
#include
#include
int…
Andy Stow Away
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1
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1 answer
Compiler warnings with libgcrypt v1.5.0
When I compile a sample program with GCRYPT_NO_DEPRECATED defined, I get the following 6 warnings:
/usr/local/Cellar/libgcrypt/1.5.0/include/gcrypt.h:1336: warning: ‘gcry_ac_io_mode_t’ is…
Zach Rattner
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0 answers
gpg-agent GENKEY via cli for simplest RSA , invalid length specifier in sexp returned, using documentation example
https://www.gnupg.org/documentation/manuals/gnupg/Agent-GENKEY.html
When I execute gpg-agent --server for an interactive session, and enter the example from this site, I get the following error :
"gpg-agent[14]: failed to convert keyparam: Invalid…
greenwall7351
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0 answers
libgpg-error.so.0, needed by ../src/.libs/libgcrypt.so, not found (try using -rpath or -rpath-link)
I am trying to cross compile the libgcrypt-1.10.1 package but I am getting error messages. Actually libgcrypt depends on libgpg-error, I have cross compiled it and added path to LD_LIBRARY_PATH. After doing all these still I am getting errors. Can…
Billa Surendra
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1 answer
libgcrypt - how to get length of data stored in buffer returned by gcry_cipher_encrypt()
I am writing a simple program to encrypt and decrypt a c-string using libgcrypt.
In one part of my program, gcry_cipher_encrypt() is called like this:
gcry_cipher_encrypt(handle, cipher_text, cipher_text_buf_len, plain_text,…
varadmathur
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0
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0 answers
Signing gcrypt data returns 16777281
I setup the following gcrypt code to first sign and then following that verify the data.
However, this already returns 16777281 as result of the signing operation.
But I couldn't find any error message that matches this.
Edit: Additional Info:
The…
raycons
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