Revert "delete everything" (includes everything non-go-crypto)

This reverts commit 96a3502

types/proposal.go

@@ -0,0 +1,58 @@
+package types
+
+import (
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/tendermint/tendermint/crypto"
+)
+
+var (
+	ErrInvalidBlockPartSignature = errors.New("Error invalid block part signature")
+	ErrInvalidBlockPartHash      = errors.New("Error invalid block part hash")
+)
+
+// Proposal defines a block proposal for the consensus.
+// It refers to the block only by its PartSetHeader.
+// It must be signed by the correct proposer for the given Height/Round
+// to be considered valid. It may depend on votes from a previous round,
+// a so-called Proof-of-Lock (POL) round, as noted in the POLRound and POLBlockID.
+type Proposal struct {
+	Height           int64            `json:"height"`
+	Round            int              `json:"round"`
+	Timestamp        time.Time        `json:"timestamp"`
+	BlockPartsHeader PartSetHeader    `json:"block_parts_header"`
+	POLRound         int              `json:"pol_round"`    // -1 if null.
+	POLBlockID       BlockID          `json:"pol_block_id"` // zero if null.
+	Signature        crypto.Signature `json:"signature"`
+}
+
+// NewProposal returns a new Proposal.
+// If there is no POLRound, polRound should be -1.
+func NewProposal(height int64, round int, blockPartsHeader PartSetHeader, polRound int, polBlockID BlockID) *Proposal {
+	return &Proposal{
+		Height:           height,
+		Round:            round,
+		Timestamp:        time.Now().UTC(),
+		BlockPartsHeader: blockPartsHeader,
+		POLRound:         polRound,
+		POLBlockID:       polBlockID,
+	}
+}
+
+// String returns a string representation of the Proposal.
+func (p *Proposal) String() string {
+	return fmt.Sprintf("Proposal{%v/%v %v (%v,%v) %v @ %s}",
+		p.Height, p.Round, p.BlockPartsHeader, p.POLRound,
+		p.POLBlockID, p.Signature, CanonicalTime(p.Timestamp))
+}
+
+// SignBytes returns the Proposal bytes for signing
+func (p *Proposal) SignBytes(chainID string) []byte {
+	bz, err := cdc.MarshalJSON(CanonicalProposal(chainID, p))
+	if err != nil {
+		panic(err)
+	}
+	return bz
+}