Add test cases covering the relevant key length boundaries: 64 bytes +/- 1 byte for HMAC-SHA256 and 128 bytes +/- 1 byte for HMAC-SHA512
Add test cases covering the relevant key length boundaries: 64 bytes +/- 1 byte for HMAC-SHA256 and 128 bytes +/- 1 byte for HMAC-SHA512

PIVX-Project/PIVX,PIVX-Project/PIVX,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX,PIVX-Project/PIVX,PIVX-Project/PIVX,Darknet-Crypto/Darknet,Darknet-Crypto/Darknet,Darknet-Crypto/Darknet,Darknet-Crypto/Darknet,PIVX-Project/PIVX,Darknet-Crypto/Darknet,PIVX-Project/PIVX