# Code samples for the PKCS \$111 library for AWS CloudHSM Client SDK 5
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The code samples on GitHub show you how to accomplish basic tasks using the PKCS \$111 library for AWS CloudHSM Client SDK 5. 

## Prerequisites
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Before running samples, perform the following steps to set up your environment:
+ Install and configure the [PKCS \$111 library](pkcs11-library-install.md) for Client SDK 5.
+ Set up a [cryptographic user (CU)](manage-hsm-users.md). Your application uses this HSM account to run the code samples on the HSM.

## Code samples
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Code Samples for the AWS CloudHSM Software Library for PKCS\$111 are available on [GitHub](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples). This repository includes examples on how to do common operations using PKCS\$111 including encryption, decryption, signing and verifying.
+ [Generate keys (AES, RSA, EC)](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/tree/master/src/generate)
+ [List key attributes](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/attributes/)
+ [Encrypt and decrypt data with AES GCM](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/encrypt/aes_gcm.c)
+ [Encrypt and decrypt data with AES\$1CTR](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/tree/master/src/encrypt/aes_ctr.c) 
+ [Encrypt and decrypt data with 3DES](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/tree/master/src/encrypt/des_ecb.c) 
+ [Sign and verify data with RSA](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/sign/rsa_sign.c)
+ [Derive keys using HMAC KDF](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/derivation/hmac_kdf.c)
+ [Wrap and unwrap keys with AES using PKCS \$15 padding](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/wrapping/aes_wrapping.c)
+ [Wrap and unwrap keys with AES using no padding](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/wrapping/aes_no_padding_wrapping.c)
+ [Wrap and unwrap keys with AES using zero padding](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/wrapping/aes_zero_padding_wrapping.c)
+ [Wrap and unwrap keys with AES-GCM](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/tree/master/src/wrapping/aes_gcm_wrapping.c)
+ [Wrap and unwrap keys with RSA](https://github.com/aws-samples/aws-cloudhsm-pkcs11-examples/blob/master/src/wrapping/rsa_wrapping.c)