71 lines
1.8 KiB
Markdown
71 lines
1.8 KiB
Markdown
<!--
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order: 4
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-->
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# Types
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Besides accounts (specified in [State](02_state.md)), the types exposed by the auth module
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are `StdFee`, the combination of an amount and gas limit, `StdSignature`, the combination
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of an optional public key and a cryptographic signature as a byte array, `StdTx`,
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a struct which implements the `sdk.Tx` interface using `StdFee` and `StdSignature`, and
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`StdSignDoc`, a replay-prevention structure for `StdTx` which transaction senders must sign over.
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## StdFee
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A `StdFee` is simply the combination of a fee amount, in any number of denominations,
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and a gas limit (where dividing the amount by the gas limit gives a "gas price").
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```go
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type StdFee struct {
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Amount Coins
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Gas uint64
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}
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```
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## StdSignature
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A `StdSignature` is the combination of an optional public key and a cryptographic signature
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as a byte array. The SDK is agnostic to particular key or signature formats and supports any
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supported by the `PubKey` interface.
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```go
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type StdSignature struct {
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PubKey PubKey
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Signature []byte
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}
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```
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## StdTx
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A `StdTx` is a struct which implements the `sdk.Tx` interface, and is likely to be generic
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enough to serve the purposes of many Cosmos SDK blockchains.
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```go
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type StdTx struct {
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Msgs []sdk.Msg
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Fee StdFee
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Signatures []StdSignature
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Memo string
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}
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```
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## StdSignDoc
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A `StdSignDoc` is a replay-prevention structure to be signed over, which ensures that
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any submitted transaction (which is simply a signature over a particular bytestring)
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will only be executable once on a particular blockchain.
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`json.RawMessage` is preferred over using the SDK types for future compatibility.
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```go
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type StdSignMsg struct {
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ChainID string
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AccountNumber uint64
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Sequence uint64
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TimeoutHeight uint64
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Fee StdFee
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Msgs []sdk.Msg
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Memo string
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}
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```
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