pkcs12: expected exactly two safe bags in the PFX PDU
https://github.com/ereOn/crypto/commit/05f6847ff80ca34c92a01a688c7b81e874af3009在pkcs12.go,Decode方法之后,再加入DecodeAll方法//DecodeAllextractsallcertificateandprivatekeysfrompfxData.funcDecodeAll(pfxData[]byt