Extended Master Secret Generation PK Callback

[night1rider]

Feature Request for the ability to do a callback function for EMS Generation

ZD#19038

[night1rider]

Tested call back by adding a new callback for PK in the client/server example. Added and registered myGenExtMaster and tested with

./configure --enable-pkcallbacks --enable-extended-master CFLAGS="-DTEST_PK_PRIVKEY"

myGenExtMaster simple falls through but will print a debug message Gen Extended Master

Detailed Logs

Client ran with ./examples/client/client -P

PK RSA Verify: sigSz 256, keySz 270
PK RSA Verify: ret 51
PK RSA Verify: sigSz 256, keySz 270
PK RSA Verify: ret 51
PK RSA PSS Verify: sigSz 256, hash 414, mgf 1, keySz 270
PK RSA PSS Verify: ret 64
PK ECC PMS: Side client, Peer Curve 7
PK ECC KeyGen: keySz 0, Curve ID 7
PK ECC KeyGen: ret 0
PK ECC PMS: ret 0, PubKeySz 65, OutLen 32
Gen Extended MasterGen Extended Master: ret -288
Gen Master CbGen Master Cb: ret -288
PK RSA PSS Sign: inSz 32, hash 414, mgf 1, keySz 0
PK RSA PSS Sign: ret 0, outSz 256
PK RSA PSS SignCheck: sigSz 256, hash 414, mgf 1, keySz 0
PK RSA PSS SignCheck: ret 64
Set Encrypt Keys CbSet Encrypt Keys Cb: ret -288
Tls Finished CbTls Finished Cb: ret -288
Set Encrypt Keys CbSet Encrypt Keys Cb: ret -288
Tls Finished CbTls Finished Cb: ret -288
SSL version is TLSv1.2
SSL cipher suite is TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
SSL curve name is SECP256R1
I hear you fa shizzle!

Server ran with ./examples/server/server -P

PK ECC KeyGen: keySz 32, Curve ID 7
PK ECC KeyGen: ret 0
PK RSA PSS Sign: inSz 32, hash 414, mgf 1, keySz 0
PK RSA PSS Sign: ret 0, outSz 256
PK RSA PSS SignCheck: sigSz 256, hash 414, mgf 1, keySz 0
PK RSA PSS SignCheck: ret 64
PK RSA Verify: sigSz 256, keySz 270
PK RSA Verify: ret 51
PK ECC PMS: Side server, Peer Curve 7
PK ECC PMS: ret 0, PubKeySz 65, OutLen 32
Gen Extended Master: ret -288
Gen Master Cb: ret -288
PK RSA PSS Verify: sigSz 256, hash 414, mgf 1, keySz 270
PK RSA PSS Verify: ret 64
Set Encrypt Keys Cb: ret -288
Tls Finished Cb: ret -288
Set Encrypt Keys Cb: ret -288
Tls Finished Cb: ret -288
SSL version is TLSv1.2
SSL cipher suite is TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
SSL curve name is SECP256R1
Client message: hello wolfssl!