why secp256k1.utils.randomPrivateKey() produce a 32 bytes key?

[zzzh]

And so do the secp256k1.getPublicKey(). Shouldn't they produce keys of 64 bytes?

[nflatrea]

nope public keys in Elliptic curve cryptography is just point coordinates, You can encode it in PEM or usually SEC format,

66 bytes for uncompressed public key

• 0x04 + x[32] + y[32]

You can also compress it to produce 33 bytes public keys, only using one coordinate and parity

33 bytes for compressed public key

• 0x02 + x[32] when y is even
• 0x03 + x[32] when y is odd

https://www.secg.org/sec1-v2.pdf