SIGN_MODE_DIRECT - SIGN_MODE_DIRECT specifies a signing mode which uses SignDoc and is verified with raw bytes from Tx
SIGN_MODE_EIP_191 - SIGN_MODE_EIP_191 specifies the sign mode for EIP 191 signing on the Cosmos SDK. Ref: https://eips.ethereum.org/EIPS/eip-191
Currently, SIGN_MODE_EIP_191 is registered as a SignMode enum variant,
but is not implemented on the SDK by default. To enable EIP-191, you need
to pass a custom TxConfig that has an implementation of
SignModeHandler for EIP-191. The SDK may decide to fully support
EIP-191 in the future.
Since: cosmos-sdk 0.45.2
SIGN_MODE_LEGACY_AMINO_JSON - SIGN_MODE_LEGACY_AMINO_JSON is a backwards compatibility mode which uses Amino JSON and will be removed in the future
SIGN_MODE_TEXTUAL - SIGN_MODE_TEXTUAL is a future signing mode that will verify some human-readable textual representation on top of the binary representation from SIGN_MODE_DIRECT
SIGN_MODE_UNSPECIFIED - SIGN_MODE_UNSPECIFIED specifies an unknown signing mode and will be rejected
SignMode represents a signing mode with its own security guarantees.