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Auth

ℹ️info

JMES's auth module inherits from Cosmos SDK's auth module. This document is a stub and mainly covers important JMES-specific notes on how it is used.

JMES's Auth module extends the functionality from Cosmos SDK's auth module with a modified ante handler, which applies basic transaction validity checks, such as signatures, nonces, and auxiliary fields.

Gas Fee​

Like all transactions on the JMES blockchain, MsgSend and MsgMultiSend incur gas fees. These fees are determined by a validator's minimum gas price and the complexity of the transaction. More complex transactions incur higher fees. Gas fees are specified by the sender when a transaction is outbound. For more information on how gas is calculated, see fees.

Parameters​

The subspace for the Auth module is auth.


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type Params struct {
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MaxMemoCharacters uint64 `json:"max_memo_characters" yaml:"max_memo_characters"`
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TxSigLimit uint64 `json:"tx_sig_limit" yaml:"tx_sig_limit"`
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TxSizeCostPerByte uint64 `json:"tx_size_cost_per_byte" yaml:"tx_size_cost_per_byte"`
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SigVerifyCostED25519 uint64 `json:"sig_verify_cost_ed25519" yaml:"sig_verify_cost_ed25519"`
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SigVerifyCostSecp256k1 uint64 `json:"sig_verify_cost_secp256k1" yaml:"sig_verify_cost_secp256k1"`
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}

Genesis parameters​

The genesis parameters outlined in the Genesis Builder Script are as follows:


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# Auth: set max memo characters to 512
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genesis['app_state']['auth']['params']['max_memo_characters'] = '512'

MaxMemoCharacters​

The maximum permitted number of characters in the memo of a transaction.

  • type: uint64
  • genesis: 512

TxSigLimit​

The maximum number of signers for a transaction. A single transaction can have multiple messages and multiple signers.

  • type: uint64
  • default: 7

TxSizeCostPerByte​

The cost per byte used to compute the gas consumption of a transaction. TxSizeCostPerByte * txsize.

  • type: uint64
  • default: 10

SigVerifyCostED25519​

The gas cost for verifying ED25519 signatures.

  • type: uint64
  • default: 590

SigVerifyCostSecp256k1​

The gas cost for verifying Secp256k1 signatures.

  • type: uint64
  • default: 1000