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Maximum size of a coded ECDSA signature: a deep sinking in bitcoin

As an experienced bitcoin passionate, you are not alien to the complexities of digital signatures in this cryptocurrency. An aspect of these signatures that aroused your curiosity is the maximum size limit imposed by Ethereum on the coded ECDSA signatures (encrypted data).

To answer your question directly, there is no simple answer. However, I will provide an analysis based on the information provided and on other relevant sources.

Limitations

In Bitcoin, ECDSA signatures usually have 64 bytes in length for key key signatures. This is due to several factors:

* Compression

: To reduce storage requirements, Bitcoin implementation uses a variable length coding scheme that compresses the signature in a shorter form.

* Security : While longer signatures offer more security against attacks such as Oracle Padding attacks, they also increase calculation and storage requirements.

Ethereum’s approach

When it comes to ECDSA signatures coded on Ethereum, the situation is different. According to an answer about why the Bitcoin community hates Ethereum, an experienced taxpayer mentions that the key key signatures can be up to 75 bytes.

To understand why this is possible, let’s throw ourselves in the details of the Ethereum implementation. The Ethereum blockchain uses a variant of the ECDSA algorithm with a compressed version of the public key, which allows longer signature lengths.

Mathematics behind her

To calculate the maximum size limit, we must consider the compression factor and coding scheme used in Ethereum. Assuming a 64 -bit public key and using the variable length coding scheme (VLE), we can estimate the compressed length of signature as follows:

• Public compressed key: 8 bytes

• ECDSA compression factor: approximately 0.5

• Compressed signature length: 32 bytes

The addition of these components together gives us a maximum compressed signature length of approximately 64 bytes.

Conclusion

Although there is no unique, definitive answer, to the question that is the maximum size limit for ECDSA Codified Signatures DER on Ethereum, based on existing knowledge and research, it seems that the public key signatures can have up to 75 bytes in length. However, this is probably a simple simplification and may not reflect the real implementation or practical limitations.

As with any complex cryptographic subject, the best approach is to consult with relevant sources and experts in the field for more precise information.

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